Soi s\u1ed1 \u0111\u1ec1 t\u1ef7 l\u1ec7 tr\u00fang 99 % v\u00e0 nh\u1eefng ki\u1ebfn th\u1ee9c quan tr\u1ecdng c\u1ea7n bi\u1ebft!<\/strong><\/h2>\n\n\n\nSoi s\u1ed1 trong l\u00f4 \u0111\u1ec1, x\u1ed5 s\u1ed1 l\u00e0 thu\u1eadt ng\u1eef kh\u00f4ng c\u00f2n qu\u00e1 xa l\u1ea1 v\u1edbi nhi\u1ec1u ng\u01b0\u1eddi ch\u01a1i. Tuy nhi\u00ean, l\u00e0m th\u1ebf n\u00e0o soi s\u1ed1 \u0111\u1ec1 t\u1ef7 l\u1ec7 tr\u00fang 99<\/mark> <\/a>% <\/strong>th\u00ec kh\u00f4ng ph\u1ea3i ai c\u0169ng l\u00e0m \u0111\u01b0\u1ee3c. <\/strong>B\u1edfi n\u00f3 kh\u00f4ng h\u1ec1 \u0111\u01a1n gi\u1ea3n nh\u01b0 nhi\u1ec1u ng\u01b0\u1eddi v\u1eabn ngh\u0129. V\u1eady h\u00e3y c\u00f9ng trang b\u1ecb cho m\u00ecnh nh\u1eefng ki\u1ebfn th\u1ee9c quan tr\u1ecdng v\u1ec1 soi s\u1ed1 l\u00f4 \u0111\u1ec1 n\u00e0y, qua \u0111\u00f3 c\u00f3 th\u1ec3 t\u00ecm ra con s\u1ed1 may m\u1eafn, \u0111\u1ea1t tr\u00fang th\u01b0\u1edfng l\u1edbn nh\u01b0 mong mu\u1ed1n.<\/p>\n\n\n\n1. M\u1ee5c \u0111\u00edch c\u1ee7a soi s\u1ed1 \u0111\u1ec1 t\u1ef7 l\u1ec7 tr\u00fang 99 %<\/strong><\/h2>\n\n\n\nSoi s\u1ed1 l\u00e0 c\u00e1ch ng\u01b0\u1eddi ch\u01a1i s\u1eed d\u1ee5ng c\u00e1c th\u1ee7 thu\u1eadt t\u00ednh to\u00e1n v\u00e0 kinh nghi\u1ec7m c\u1ee7a m\u00ecnh \u0111\u1ec3 gi\u00fap t\u00ecm ra nh\u1eefng con s\u1ed1 l\u00f4 ho\u1eb7c \u0111\u1ec1 v\u1ec1 trong ng\u00e0y ho\u1eb7c c\u00e1c ng\u00e0y k\u1ebf ti\u1ebfp ch\u00ednh x\u00e1c nh\u1ea5t. T\u1eeb \u0111\u00f3, gi\u00fap \u0103n th\u1eafng l\u1edbn.<\/p>\n\n\n\n
Tuy nhi\u00ean, ph\u01b0\u01a1ng ph\u00e1p n\u00e0y kh\u00f4ng h\u1ec1 d\u1ec5, nh\u1ea5t l\u00e0 v\u1edbi nh\u1eefng ng\u01b0\u1eddi \u00edt kinh nghi\u1ec7m. B\u1edfi n\u00f3 ph\u1ea3i d\u1ef1a v\u00e0o nh\u1eefng quy lu\u1eadt v\u1ec1 s\u1ed1 tr\u00ean c\u00e1c b\u1ea3ng k\u1ebft qu\u1ea3 x\u1ed5 s\u1ed1. Do \u0111\u00f3, n\u1ebfu ch\u1ec9 c\u1ea7n t\u00ednh sai v\u00e0 ch\u1ec7ch h\u01b0\u1edbng l\u00e0 ng\u01b0\u1eddi ch\u01a1i d\u1ec5 b\u1ecb thua l\u1ed7. H\u01a1n n\u1eefa, x\u00e1c su\u1ea5t tr\u00fang c\u1ee7a c\u00e1c ph\u01b0\u01a1ng ph\u00e1p soi c\u1ea7u l\u00f4 \u0111\u1ec1 kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng \u0111\u1ea1t hi\u1ec7u qu\u1ea3 cao, hay ch\u00ednh x\u00e1c 100.<\/p>\n\n\n\n
V\u00ec v\u1eady, \u0111\u1ec3 t\u00ecm ra con s\u1ed1 ch\u00ednh x\u00e1c v\u00e0 c\u00f3 h\u01b0\u1edbng \u0111i hi\u1ec7u qu\u1ea3 tr\u00e1nh b\u1ecb thua l\u1ed7 th\u00ec ng\u01b0\u1eddi ch\u01a1i c\u1ea7n th\u1ef1c hi\u1ec7n c\u00e1c th\u1ee7 thu\u1eadt soi s\u1ed1 \u0111\u1ec3 t\u1ef7 l\u1ec7 tr\u00fang 99 %. V\u00e0 gi\u00fap l\u00e0m gi\u00e0u nhanh ch\u00f3ng, t\u0103ng thu nh\u1eadp t\u00e0i ch\u00ednh h\u00e0ng ng\u00e0y t\u1eeb c\u00e1ch ch\u01a1i l\u00f4 \u0111\u1ec1, x\u1ed5 s\u1ed1.<\/p>\n\n\n\n![\"l\u1ec7](\"https:\/\/soicaudocthuxoso.com\/wp-content\/uploads\/2024\/10\/muc-dich-cua-soi-so-de-ty-le-trung-99.jpg\")
<\/figure>\n\n\n\nSoi s\u1ed1 \u0111\u1ec1<\/em> t\u1ef7 l\u1ec7 tr\u00fang 99 % v\u00f4 c\u00f9ng quan tr\u1ecdng v\u1edbi m\u1ed7i ng\u01b0\u1eddi ch\u01a1i<\/em><\/p>\n\n\n\n\u00bb<\/strong><\/mark> d\u1ef1 \u0111o\u00e1n x\u1ed5 s\u1ed1 mi\u1ec1n b\u1eafc h\u00f4m nay<\/mark><\/a><\/strong> \u00ab<\/strong><\/mark><\/p>\n\n\n\n2. Soi s\u1ed1 g\u1ed3m nh\u1eefng lo\u1ea1i n\u00e0o?<\/strong><\/h2>\n\n\n\n\n- Soi s\u1ed1 l\u00f4 \u0111\u1ec1 g\u1ed3m c\u00f3 nh\u1eefng lo\u1ea1i sau v\u00e0 m\u1ed7i lo\u1ea1i l\u1ea1i c\u00f3 nh\u1eefng t\u1ef7 l\u1ec7 \u0103n khi th\u1eafng kh\u00e1c nhau nh\u01b0:<\/li>\n\n\n\n
- S\u1ed1 \u0111\u1ec1: V\u1edbi con s\u1ed1 n\u00e0y, ng\u01b0\u1eddi ch\u01a1i ph\u1ea3i d\u1ef1 \u0111o\u00e1n ch\u00ednh x\u00e1c 2 con s\u1ed1 cu\u1ed1i c\u1ee7a gi\u1ea3i \u0111\u1eb7c bi\u1ec7t. V\u00e0 t\u1ef7 l\u1ec7 tr\u00fang khi ch\u01a1i \u0111\u1ec1 s\u1ebd l\u00e0 1:70.<\/li>\n\n\n\n
- S\u1ed1 \u0111\u1ec1 3 c\u00e0ng: \u0110\u00e2y l\u00e0 con s\u1ed1 m\u00e0 ng\u01b0\u1eddi ch\u01a1i c\u1ea7n d\u1ef1 \u0111o\u00e1n ch\u00ednh x\u00e1c 3 s\u1ed1 cu\u1ed1i c\u1ee7a gi\u1ea3i \u0111\u1eb7c bi\u1ec7t. C\u00e1ch ch\u01a1i n\u00e0y s\u1ebd kh\u00f3 h\u01a1n ch\u01a1i \u0111\u1ec1 nh\u01b0ng t\u1ef7 l\u1ec7 tr\u00fang th\u01b0\u1edfng c\u1ee7a n\u00f3 v\u00f4 c\u00f9ng l\u1edbn v\u1edbi m\u1ee9c \u0103n l\u00e0 1:400. <\/li>\n\n\n\n
- S\u1ed1 l\u00f4: V\u1edbi s\u1ed1 l\u00f4 hay \u0111\u00e1nh l\u00f4 th\u00ec ng\u01b0\u1eddi ch\u01a1i c\u1ea7n d\u1ef1 \u0111o\u00e1n \u0111\u00fang 2 s\u1ed1 cu\u1ed1i c\u00f9ng c\u1ee7a l\u00f4 mi\u1ec1n B\u1eafc ho\u1eb7c l\u00f4 mi\u1ec1n Nam. V\u1edbi l\u00f4 mi\u1ec1n B\u1eafc s\u1ebd v\u1ec1 27 con c\u00f2n l\u00f4 mi\u1ec1n Nam s\u1ebd v\u1ec1 18 con. V\u00ec th\u1ebf, l\u00f4 th\u1ee7 ch\u1ec9 c\u1ea7n soi \u0111\u00fang m\u1ed9t trong c\u00e1c s\u1ed1 n\u00e0y th\u00ec \u0111\u00e3 \u0111\u01b0\u1ee3c t\u00ednh l\u00e0 tr\u00fang. V\u00e0 may m\u1eafn nh\u1ea5t l\u00e0 tr\u00fang 2 nh\u00e1y khi b\u1ea1n soi s\u1ed1<\/strong> \u0111\u1ec1 t\u1ef7 l\u1ec7 tr\u00fang 99 % <\/strong>\u1edf c\u1ea3 2 gi\u1ea3i.<\/li>\n\n\n\n
- Soi s\u1ed1 l\u00f4 xi\u00ean: T\u01b0\u01a1ng t\u1ef1 k\u1ebft qu\u1ea3 \u0111\u00e1nh l\u00f4 xi\u00ean c\u0169ng ph\u1ee5 thu\u1ed9c theo 27 gi\u1ea3i mi\u1ec1n B\u1eafc v\u00e0 18 gi\u1ea3i mi\u1ec1n Nam. Nh\u01b0ng ng\u01b0\u1eddi ch\u01a1i ph\u1ea3i \u0111\u00e1nh c\u00f9ng l\u00fac 2 ho\u1eb7c 3 hay 4 con l\u00f4. N\u1ebfu t\u1ea5t c\u1ea3 con s\u1ed1 n\u00e0y m\u00e0 c\u00f9ng v\u1ec1 trong m\u1ed9t ng\u00e0y h\u00f4m \u0111\u00f3 th\u00ec ng\u01b0\u1eddi ch\u01a1i s\u1ebd th\u1eafng \u0111\u1eadm. Nh\u01b0ng ng\u01b0\u1ee3c l\u1ea1i th\u00ec s\u1ebd thua l\u1ed7 n\u1eb7ng. Do \u0111\u00f3, ng\u01b0\u1eddi ch\u01a1i c\u1ea7n s\u1eed d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p soi s\u1ed1 \u0111\u1ec3 t\u1ef7 l\u1ec7 tr\u00fang 99% l\u00e0 r\u1ea5t quan tr\u1ecdng.<\/li>\n<\/ul>\n\n\n\n
![\"X\u00e1c](\"https:\/\/soicaudocthuxoso.com\/wp-content\/uploads\/2024\/10\/cac-loai-soi-so-de-ty-le-trung-99.jpg\")
<\/figure>\n\n\n\nSoi s\u1ed1 g\u1ed3m soi s\u1ed1 \u0111\u1ec1, s\u1ed1 l\u00f4, l\u00f4 xi\u00ean, s\u1ed1 \u0111\u1ec1 3 c\u00e0ng<\/em><\/p>\n\n\n\n3. X\u00e1c su\u1ea5t tr\u00fang c\u1ee7a c\u00e1c con l\u00f4, \u0111\u1ec1 nh\u01b0 th\u1ebf n\u00e0o?<\/strong><\/h2>\n\n\n\n\u0110\u1ec3 c\u00f3 th\u1ec3 soi s\u1ed1 \u0111\u1ec1 t\u1ef7 l\u1ec7 tr\u00fang 99<\/strong> %<\/strong> th\u00ec ng\u01b0\u1eddi ch\u01a1i kh\u00f4ng n\u00ean b\u1ecf qua c\u00e1ch t\u00ednh x\u00e1c su\u1ea5t tr\u00fang c\u1ee7a c\u00e1c lo\u1ea1i con l\u00f4, \u0111\u1ec1 hi\u1ec7n nay. H\u01a1n n\u1eefa c\u00e1ch n\u00e0y c\u0169ng c\u1ef1c k\u1ef3 hi\u1ec7u qu\u1ea3 \u0111\u1ec3 ng\u01b0\u1eddi ch\u01a1i c\u00f3 th\u1ec3 l\u01b0\u1eddng tr\u01b0\u1edbc \u0111\u01b0\u1ee3c kh\u1ea3 n\u0103ng tr\u00fang hay tr\u01b0\u1ee3t. V\u1eady c\u00e1ch t\u00ednh x\u00e1c su\u1ea5t tr\u00fang l\u00f4 \u0111\u1ec1 n\u00e0y nh\u01b0 th\u1ebf n\u00e0o? C\u00f9ng tham kh\u1ea3o nh\u00e9.<\/p>\n\n\n\n3.1. T\u00ednh x\u00e1c su\u1ea5t tr\u00fang c\u1ee7a 1 con l\u00f4<\/em><\/strong><\/h3>\n\n\n\n\u0110\u1ec3 t\u00ednh x\u00e1c su\u1ea5t tr\u00fang l\u00f4, tr\u01b0\u1edbc h\u1ebft ch\u00fang ta c\u1ea7n t\u00ednh x\u00e1c su\u1ea5t t\u1ea1ch l\u00f4. C\u1ee5 th\u1ec3, trong x\u1ed5 s\u1ed1 c\u00f3 27 k\u1ebft qu\u1ea3 t\u01b0\u01a1ng \u1ee9ng v\u1edbi 27 l\u1ea7n quay, x\u00e1c su\u1ea5t m\u1ed7i l\u1ea7n t\u1ea1ch l\u00f4 l\u00e0 99 %. Nh\u01b0 v\u1eady t\u1ef7 l\u1ec7 t\u1ea1ch l\u00f4 khi quay \u0111\u1ebfn gi\u1ea3i cu\u1ed1i c\u00f9ng l\u00e0 0,99^27.<\/p>\n\n\n\n
T\u1eeb \u0111\u00e2y ta c\u00f3 th\u1ec3 t\u00ednh \u0111\u01b0\u1ee3c x\u00e1c su\u1ea5t tr\u00fang c\u1ee7a m\u1ed9t con l\u00f4 l\u00e0 = 1 \u2013 x\u00e1c su\u1ea5t t\u1ea1ch l\u00f4 = 1 \u2013 0,99^27 = 1 \u2013 0,7623 = 23,7657%.<\/p>\n\n\n\n
Nh\u01b0 v\u1eady, x\u00e1c su\u1ea5t tr\u00fang m\u1ed9t con l\u00f4 23,7657% v\u00e0 \u0111\u1ec3 c\u00f3 th\u1ec3 soi s\u1ed1 l\u00f4 c\u00f3 t\u1ef7 l\u1ec7 tr\u00fang 99 % th\u00ec ng\u01b0\u1eddi ch\u01a1i c\u1ea7n k\u1ebft h\u1ee3p v\u1edbi nh\u1eefng kinh nghi\u1ec7m v\u00e0 ph\u01b0\u01a1ng ph\u00e1p soi l\u00f4 c\u1ea7u \u0111\u1ec3 t\u00ecm ra con s\u1ed1 may m\u1eafn v\u00e0 ch\u00ednh x\u00e1c nh\u1ea5t.<\/p>\n\n\n\n![\"X\u00e1c](\"https:\/\/soicaudocthuxoso.com\/wp-content\/uploads\/2024\/10\/tinh-xac-suat-trung-lo-de.jpg\")
<\/figure>\n\n\n\nM\u1ed7i con l\u00f4 \u0111\u1ec1 s\u1ebd c\u00f3 x\u00e1c su\u1ea5t tr\u00fang kh\u00e1c nhau m\u00e0 ng\u01b0\u1eddi ch\u01a1i c\u1ea7n n\u1eafm \u0111\u1ec3 t\u0103ng t\u1ef7 l\u1ec7 soi s\u1ed1 \u0111\u1eb9p<\/em><\/p>\n\n\n\n\u00bb<\/strong><\/mark> ch\u1ed1t s\u1ed1 d\u00e0n l\u00f4 XSMB h\u00f4m nay<\/mark><\/a><\/strong> \u00ab<\/strong><\/mark><\/p>\n\n\n\n3.2. X\u00e1c su\u1ea5t tr\u00fang trong l\u00f4 xi\u00ean 2 v\u00e0 xi\u00ean 3<\/em><\/strong><\/h3>\n\n\n\nL\u00f4 xi\u00ean 2 t\u1ee9c ng\u01b0\u1eddi ch\u01a1i ph\u1ea3i \u0111\u00e1nh 2 con l\u00f4 v\u00e0 n\u1ebfu tr\u00fang c\u1ea3 2 con th\u00ec m\u1edbi \u0111\u01b0\u1ee3c t\u00ednh \u0103n. Do \u0111\u00f3, mu\u00f4n soi s\u1ed1<\/strong> \u0111\u1ec1 t\u1ef7 l\u1ec7 tr\u00fang 99 %<\/strong> \u1edf con l\u00f4 xi\u00ean 2 n\u00e0y, ng\u01b0\u1eddi ch\u01a1i c\u1ea7n t\u00ednh \u0111\u01b0\u1ee3c x\u00e1c su\u1ea5t tr\u00fang c\u1ee7a n\u00f3 c\u1ee5 th\u1ec3 nh\u01b0 sau:<\/p>\n\n\n\nN\u1ebfu nh\u01b0 \u0111\u00e1nh l\u00f4 xi\u00ean 2 m\u00e0 ch\u1ec9 v\u1ec1 m\u1ed9t con ho\u1eb7c kh\u00f4ng v\u1ec1 con n\u00e0o th\u00ec t\u1ee9c l\u00e0 b\u1ea1n \u0111\u00e3 t\u1ea1ch. L\u00fac n\u00e0y, x\u00e1c su\u1ea5t kh\u00f4ng v\u1ec1 con n\u00e0o = 0,98 ^ 27 = 57,957%.<\/p>\n\n\n\n
X\u00e1c su\u1ea5t ch\u1ec9 v\u1ec1 1 con = 2 X x\u00e1c su\u1ea5t tr\u00fang 1 l\u00f4 X x\u00e1c su\u1ea5t kh\u00f4ng tr\u00fang l\u00f4 = 2 x 23,7657% x 0,99^27 = 36,238%.<\/p>\n\n\n\n
X\u00e1c su\u1ea5t kh\u00f4ng tr\u00fang l\u00f4 xi\u00ean 2 = x\u00e1c su\u1ea5t kh\u00f4ng c\u00f3 con n\u00e0o v\u1ec1 + x\u00e1c su\u1ea5t ch\u1ec9 v\u1ec1 1 con = 57,957% + 36,238% = 94,195%.<\/p>\n\n\n\n
T\u1eeb \u0111\u00f3, ta t\u00ednh \u0111\u01b0\u1ee3c x\u00e1c su\u1ea5t tr\u00fang l\u00f4 xi\u00ean 2 = 100% – x\u00e1c su\u1ea5t kh\u00f4ng tr\u00fang l\u00f4 xi\u00ean 2 = 100 – 94,195% = 5,8%.<\/p>\n\n\n\n
C\u00e1ch t\u00ednh x\u00e1c su\u1ea5t tr\u00fang l\u00f4 xi\u00ean 3 c\u0169ng t\u01b0\u01a1ng t\u1ef1 nh\u01b0 l\u00f4 xi\u00ean 2 v\u00e0 ta t\u00ednh \u0111\u01b0\u1ee3c l\u00e0 1,473%. Nh\u01b0 v\u1eady so v\u1edbi l\u00f4 xi\u00ean 2 th\u00ec l\u00f4 xi\u00ean 3 c\u00f3 t\u1ef7 l\u1ec7 tr\u00fang \u0111\u1ec1 cao h\u01a1n m\u1ed9t \u00edt.<\/p>\n\n\n\n
3.3. X\u00e1c su\u1ea5t tr\u00fang c\u1ee7a 1 con \u0111\u1ec1:<\/em><\/strong><\/h3>\n\n\n\nC\u00e1ch t\u00ednh x\u00e1c tr\u00fang c\u1ee7a m\u1ed9t con \u0111\u1ec1 r\u1ea5t \u0111\u01a1n gi\u1ea3n, b\u1edfi n\u00f3 ch\u1ec9 th\u01b0\u1eddng xuy\u00ean v\u1ec1 \u0111\u00fang m\u1ed9t con. Do \u0111\u00f3, c\u00e1ch t\u00ednh s\u1ebd l\u00e0 1 con trong t\u1ed5ng 100 s\u1ed1 th\u00ec ra x\u00e1c su\u1ea5t l\u00e0 1%. T\u1eeb \u0111\u00e2y, ng\u01b0\u1eddi ch\u01a1i c\u1ed1 g\u1eafng k\u1ebft h\u1ee3p c\u00e1c ph\u01b0\u01a1ng ph\u00e1p soi c\u1ea7u \u0111\u1ec1 nh\u01b0 soi theo gi\u1ea3i \u0111\u1eb7c bi\u1ec7t, theo l\u00f4 k\u00e9p, theo h\u00ecnh qu\u1ea3 tr\u00e1m\u2026\u0111\u1ec3 b\u1eaft \u0111\u1ec1 ch\u00ednh x\u00e1c nh\u1ea5t nh\u00e9.<\/p>\n\n\n\n![\"\u0111\u1ec1](\"https:\/\/soicaudocthuxoso.com\/wp-content\/uploads\/2024\/10\/xac-suat-trung-cua-moi-loai-so-lo-de.jpg\")
<\/figure>\n\n\n\nM\u1ed7i lo\u1ea1i l\u00f4, \u0111\u1ec1 l\u1ea1i c\u00f3 x\u00e1c su\u1ea5t tr\u00fang kh\u00e1c nhau<\/em><\/p>\n\n\n\n4. Quy t\u1eafc soi s\u1ed1 \u0111\u1ec1 t\u1ef7 l\u1ec7 tr\u00fang 99 c\u1ea7n nh\u1edb<\/strong><\/h2>\n\n\n\nNgo\u00e0i vi\u1ec7c n\u1eafm r\u00f5 \u0111\u01b0\u1ee3c t\u1ef7 l\u1ec7 \u0103n c\u0169ng nh\u01b0 x\u00e1c su\u1ea5t tr\u00fang khi s\u00f4i s\u1ed1 l\u00f4 \u0111\u1ec1 tr\u00ean, th\u00ec \u0111\u1ec3 soi s\u1ed1 \u0111\u1ea1t t\u1ef7 l\u1ec7 cao ng\u01b0\u1eddi ch\u01a1i c\u00f2n ph\u1ea3i n\u1eafm \u0111\u01b0\u1ee3c m\u1ed9t s\u1ed1 quy t\u1eafc c\u01a1 b\u1ea3n sau:<\/p>\n\n\n\n
– Am hi\u1ec3u lu\u1eadt ch\u01a1i: \u0110\u00e2y l\u00e0 \u0111i\u1ec1u ki\u1ec7n mang t\u00ednh quy\u1ebft \u0111\u1ecbnh l\u1edbn t\u1edbi kh\u1ea3 n\u0103ng chi\u1ebfn th\u1eafng c\u1ee7a b\u1ea1n. Do \u0111\u00f3, d\u00f9 ch\u01a1i b\u1ea5t k\u1ef3 tr\u00f2 ch\u01a1i n\u00e0o th\u00ec ng\u01b0\u1eddi ch\u01a1i c\u0169ng c\u1ea7n n\u1eafm lu\u1eadt c\u1ee7a n\u00f3, nh\u1ea5t l\u00e0 v\u1edbi soi s\u1ed1 l\u00f4 \u0111\u1ec1 l\u1ea1i c\u00e0ng quan tr\u1ecdng.<\/p>\n\n\n\n
– Nghi\u00ean c\u1ee9u k\u1ef9 c\u00e0ng v\u00e0 quy\u1ebft \u0111o\u00e1n khi ch\u1ecdn s\u1ed1: Ch\u01a1i x\u1ed5 s\u1ed1, l\u00f4 \u0111\u1ec1 c\u0169ng l\u00e0 m\u1ed9t h\u00ecnh th\u1ee9c \u0111\u1ea7u t\u01b0, v\u00ec v\u1eady ch\u1eafc ch\u1eafn s\u1ebd c\u00f3 \u0111\u01b0\u1ee3c v\u00e0 m\u1ea5t, th\u1eafng thua l\u00e0 chuy\u1ec7n th\u01b0\u1eddng t\u00ecnh. Tuy nhi\u00ean n\u1ebfu b\u1ea1n bi\u1ebft c\u00e1ch chu\u1ea9n b\u1ecb th\u00ec t\u1ec9 l\u1ec7 r\u1ee7i ro s\u1ebd kh\u00f4ng qu\u00e1 l\u1edbn. H\u00e3y nghi\u00ean c\u1ee9u c\u00e1ch chia ti\u1ec1n v\u00e0o ti\u1ec1n cho m\u1ed7i ng\u00e0y th\u1eadt c\u1ee5 th\u1ec3, n\u1ebfu \u201ctr\u01b0\u1ee3t\u201d h\u00e3y bi\u1ebft xem x\u00e9t v\u00e0 r\u00fat kinh nghi\u1ec7m.<\/p>\n\n\n\n![\"t\u00ednh](\"https:\/\/soicaudocthuxoso.com\/wp-content\/uploads\/2024\/10\/can-am-hieu-luat-choi-trong-soi-so-de-ty-le-trung-99.jpg\")
<\/figure>\n\n\n\nC\u1ea7n am hi\u1ec3u lu\u1eadt ch\u01a1i v\u00e0 c\u00f3 s\u1ef1 nghi\u00ean c\u1ee9u, t\u00ednh to\u00e1n k\u1ef9 khi soi s\u1ed1<\/em><\/p>\n\n\n\n– C\u1ea7n n\u1eafm r\u00f5 l\u1ecbch quay c\u1ee7a t\u1eebng v\u00f9ng mi\u1ec1n \u0111\u1ec3 t\u00ecm s\u1ed1 hay v\u1ec1: m\u1ed7i t\u1ec9nh, th\u00e0nh hay m\u1ed7i v\u00f9ng mi\u1ec1n s\u1ebd c\u00f3 nh\u1eefng l\u1ecbch quay kh\u00e1c nhau. Do \u0111\u00f3, ng\u01b0\u1eddi ch\u01a1i c\u1ea7n n\u1eafm r\u00f5 th\u1eddi gian v\u00e0 s\u1ed1 quay c\u1ee7a m\u1ed7i t\u1ec9nh, th\u00e0nh hay v\u00f9ng mi\u1ec1n n\u00e0y \u0111\u1ec3 t\u00ecm s\u1ed1 hay v\u1ec1 nh\u1ea5t, t\u1eeb \u0111\u00f3 m\u1edbi th\u1ef1c hi\u1ec7n soi s\u1ed1 \u0111\u1ec1 t\u1ef7 l\u1ec7 tr\u00fang 99 % <\/strong>\u0111\u01b0\u1ee3c.<\/p>\n\n\n\n– Kh\u00f4ng qu\u00e1 tham \u0111\u1ec3 \u0111\u00e1nh nhi\u1ec1u s\u1ed1 c\u00f9ng l\u00fac: Tr\u1eeb phi b\u1ea1n \u0111\u00e1nh l\u00f4 xi\u00ean th\u00ec m\u1edbi \u0111\u00e1nh nhi\u1ec1u s\u1ed1 nh\u01b0ng kh\u00f4ng qu\u00e1 4 con, c\u00f2n nh\u1eefng lo\u1ea1i l\u00f4 \u0111\u1ec1 kh\u00e1c tuy\u1ec7t \u0111\u1ed1i \u0111\u1eebng qu\u00e1 tham m\u00e0 \u0111\u00e1nh qu\u00e1 nhi\u1ec1u con. B\u1edfi b\u1ea1n s\u1ebd ph\u1ea3i \u0111\u1ea7u t\u01b0 r\u1ea5t nhi\u1ec1u v\u1ed1n nh\u01b0ng n\u1ebfu t\u1ea5t c\u1ea3 \u0111\u1ec1u kh\u00f4ng v\u1ec1 th\u00ec b\u1ea1n b\u1ecb thua l\u1ed7 kh\u00f4ng h\u1ec1 nh\u1ecf.<\/p>\n\n\n\n
– \u0110\u1eebng ng\u1ea1i h\u1ecdc h\u1ecfi t\u1eeb ng\u01b0\u1eddi kh\u00e1c: Nh\u01b0 \u0111\u00e3 n\u00f3i, trong l\u00f4 \u0111\u1ec1 kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 ch\u00ednh x\u00e1c 100%. Th\u1eadm ch\u00ed n\u00f3 lu\u00f4n kh\u00f4ng ng\u1eebng bi\u1ebfn \u0111\u1ed9ng, do \u0111\u00f3, \u0111\u1eebng ng\u1ea1i tham kh\u1ea3o \u00fd ki\u1ebfn, c\u00e1ch soi s\u1ed1 v\u00e0 \u0111\u00e1nh l\u00f4 \u0111\u1ec1 t\u1eeb ng\u01b0\u1eddi kh\u00e1c \u0111\u1ec3 h\u1ecdc h\u1ecfi th\u00eam kinh nghi\u1ec7m nh\u00e9.<\/p>\n\n\n\n![\"soi](\"https:\/\/soicaudocthuxoso.com\/wp-content\/uploads\/2024\/10\/quy-tac-soi-so-de-ty-le-trung-99-can-nho.jpg\")
<\/figure>\n\n\n\nKh\u00f4ng ng\u1eebng h\u1ecdc h\u1ecfi kinh nghi\u1ec7m t\u1eeb ng\u01b0\u1eddi kh\u00e1c<\/em><\/p>\n\n\n\nTr\u00ean \u0111\u00e2y l\u00e0 nh\u1eefng ki\u1ebfn th\u1ee9c quan tr\u1ecdng c\u1ea7n bi\u1ebft trong soi s\u1ed1 \u0111\u1ec1 t\u1ef7 l\u1ec7 tr\u00fang 99<\/strong> %. Hy v\u1ecdng s\u1ebd l\u00e0 nh\u1eefng th\u00f4ng tin h\u1eefu \u00edch cho ng\u01b0\u1eddi ch\u01a1i khi tham gia tr\u00f2 ch\u01a1i tr\u00fang s\u1ed1 n\u00e0y \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 cao nh\u1ea5t \u0111\u1ec3 l\u00e0m gi\u00e0u nhanh ch\u00f3ng.<\/p>\n\n\nch\u00ednh x\u00e1c \u0103n s\u1ed1 cao c\u1ea5p<\/h3>\n
1. M\u1ee5c \u0111\u00edch c\u1ee7a soi s\u1ed1 \u0111\u1ec1 t\u1ef7 l\u1ec7 tr\u00fang 99 %<\/strong><\/h2>\n\n\n\nSoi s\u1ed1 l\u00e0 c\u00e1ch ng\u01b0\u1eddi ch\u01a1i s\u1eed d\u1ee5ng c\u00e1c th\u1ee7 thu\u1eadt t\u00ednh to\u00e1n v\u00e0 kinh nghi\u1ec7m c\u1ee7a m\u00ecnh \u0111\u1ec3 gi\u00fap t\u00ecm ra nh\u1eefng con s\u1ed1 l\u00f4 ho\u1eb7c \u0111\u1ec1 v\u1ec1 trong ng\u00e0y ho\u1eb7c c\u00e1c ng\u00e0y k\u1ebf ti\u1ebfp ch\u00ednh x\u00e1c nh\u1ea5t. T\u1eeb \u0111\u00f3, gi\u00fap \u0103n th\u1eafng l\u1edbn.<\/p>\n\n\n\n
Tuy nhi\u00ean, ph\u01b0\u01a1ng ph\u00e1p n\u00e0y kh\u00f4ng h\u1ec1 d\u1ec5, nh\u1ea5t l\u00e0 v\u1edbi nh\u1eefng ng\u01b0\u1eddi \u00edt kinh nghi\u1ec7m. B\u1edfi n\u00f3 ph\u1ea3i d\u1ef1a v\u00e0o nh\u1eefng quy lu\u1eadt v\u1ec1 s\u1ed1 tr\u00ean c\u00e1c b\u1ea3ng k\u1ebft qu\u1ea3 x\u1ed5 s\u1ed1. Do \u0111\u00f3, n\u1ebfu ch\u1ec9 c\u1ea7n t\u00ednh sai v\u00e0 ch\u1ec7ch h\u01b0\u1edbng l\u00e0 ng\u01b0\u1eddi ch\u01a1i d\u1ec5 b\u1ecb thua l\u1ed7. H\u01a1n n\u1eefa, x\u00e1c su\u1ea5t tr\u00fang c\u1ee7a c\u00e1c ph\u01b0\u01a1ng ph\u00e1p soi c\u1ea7u l\u00f4 \u0111\u1ec1 kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng \u0111\u1ea1t hi\u1ec7u qu\u1ea3 cao, hay ch\u00ednh x\u00e1c 100.<\/p>\n\n\n\n
V\u00ec v\u1eady, \u0111\u1ec3 t\u00ecm ra con s\u1ed1 ch\u00ednh x\u00e1c v\u00e0 c\u00f3 h\u01b0\u1edbng \u0111i hi\u1ec7u qu\u1ea3 tr\u00e1nh b\u1ecb thua l\u1ed7 th\u00ec ng\u01b0\u1eddi ch\u01a1i c\u1ea7n th\u1ef1c hi\u1ec7n c\u00e1c th\u1ee7 thu\u1eadt soi s\u1ed1 \u0111\u1ec3 t\u1ef7 l\u1ec7 tr\u00fang 99 %. V\u00e0 gi\u00fap l\u00e0m gi\u00e0u nhanh ch\u00f3ng, t\u0103ng thu nh\u1eadp t\u00e0i ch\u00ednh h\u00e0ng ng\u00e0y t\u1eeb c\u00e1ch ch\u01a1i l\u00f4 \u0111\u1ec1, x\u1ed5 s\u1ed1.<\/p>\n\n\n\n<\/figure>\n\n\n\nSoi s\u1ed1 \u0111\u1ec1<\/em> t\u1ef7 l\u1ec7 tr\u00fang 99 % v\u00f4 c\u00f9ng quan tr\u1ecdng v\u1edbi m\u1ed7i ng\u01b0\u1eddi ch\u01a1i<\/em><\/p>\n\n\n\n\u00bb<\/strong><\/mark> d\u1ef1 \u0111o\u00e1n x\u1ed5 s\u1ed1 mi\u1ec1n b\u1eafc h\u00f4m nay<\/mark><\/a><\/strong> \u00ab<\/strong><\/mark><\/p>\n\n\n\n2. Soi s\u1ed1 g\u1ed3m nh\u1eefng lo\u1ea1i n\u00e0o?<\/strong><\/h2>\n\n\n\n\n- Soi s\u1ed1 l\u00f4 \u0111\u1ec1 g\u1ed3m c\u00f3 nh\u1eefng lo\u1ea1i sau v\u00e0 m\u1ed7i lo\u1ea1i l\u1ea1i c\u00f3 nh\u1eefng t\u1ef7 l\u1ec7 \u0103n khi th\u1eafng kh\u00e1c nhau nh\u01b0:<\/li>\n\n\n\n
- S\u1ed1 \u0111\u1ec1: V\u1edbi con s\u1ed1 n\u00e0y, ng\u01b0\u1eddi ch\u01a1i ph\u1ea3i d\u1ef1 \u0111o\u00e1n ch\u00ednh x\u00e1c 2 con s\u1ed1 cu\u1ed1i c\u1ee7a gi\u1ea3i \u0111\u1eb7c bi\u1ec7t. V\u00e0 t\u1ef7 l\u1ec7 tr\u00fang khi ch\u01a1i \u0111\u1ec1 s\u1ebd l\u00e0 1:70.<\/li>\n\n\n\n
- S\u1ed1 \u0111\u1ec1 3 c\u00e0ng: \u0110\u00e2y l\u00e0 con s\u1ed1 m\u00e0 ng\u01b0\u1eddi ch\u01a1i c\u1ea7n d\u1ef1 \u0111o\u00e1n ch\u00ednh x\u00e1c 3 s\u1ed1 cu\u1ed1i c\u1ee7a gi\u1ea3i \u0111\u1eb7c bi\u1ec7t. C\u00e1ch ch\u01a1i n\u00e0y s\u1ebd kh\u00f3 h\u01a1n ch\u01a1i \u0111\u1ec1 nh\u01b0ng t\u1ef7 l\u1ec7 tr\u00fang th\u01b0\u1edfng c\u1ee7a n\u00f3 v\u00f4 c\u00f9ng l\u1edbn v\u1edbi m\u1ee9c \u0103n l\u00e0 1:400. <\/li>\n\n\n\n
- S\u1ed1 l\u00f4: V\u1edbi s\u1ed1 l\u00f4 hay \u0111\u00e1nh l\u00f4 th\u00ec ng\u01b0\u1eddi ch\u01a1i c\u1ea7n d\u1ef1 \u0111o\u00e1n \u0111\u00fang 2 s\u1ed1 cu\u1ed1i c\u00f9ng c\u1ee7a l\u00f4 mi\u1ec1n B\u1eafc ho\u1eb7c l\u00f4 mi\u1ec1n Nam. V\u1edbi l\u00f4 mi\u1ec1n B\u1eafc s\u1ebd v\u1ec1 27 con c\u00f2n l\u00f4 mi\u1ec1n Nam s\u1ebd v\u1ec1 18 con. V\u00ec th\u1ebf, l\u00f4 th\u1ee7 ch\u1ec9 c\u1ea7n soi \u0111\u00fang m\u1ed9t trong c\u00e1c s\u1ed1 n\u00e0y th\u00ec \u0111\u00e3 \u0111\u01b0\u1ee3c t\u00ednh l\u00e0 tr\u00fang. V\u00e0 may m\u1eafn nh\u1ea5t l\u00e0 tr\u00fang 2 nh\u00e1y khi b\u1ea1n soi s\u1ed1<\/strong> \u0111\u1ec1 t\u1ef7 l\u1ec7 tr\u00fang 99 % <\/strong>\u1edf c\u1ea3 2 gi\u1ea3i.<\/li>\n\n\n\n
- Soi s\u1ed1 l\u00f4 xi\u00ean: T\u01b0\u01a1ng t\u1ef1 k\u1ebft qu\u1ea3 \u0111\u00e1nh l\u00f4 xi\u00ean c\u0169ng ph\u1ee5 thu\u1ed9c theo 27 gi\u1ea3i mi\u1ec1n B\u1eafc v\u00e0 18 gi\u1ea3i mi\u1ec1n Nam. Nh\u01b0ng ng\u01b0\u1eddi ch\u01a1i ph\u1ea3i \u0111\u00e1nh c\u00f9ng l\u00fac 2 ho\u1eb7c 3 hay 4 con l\u00f4. N\u1ebfu t\u1ea5t c\u1ea3 con s\u1ed1 n\u00e0y m\u00e0 c\u00f9ng v\u1ec1 trong m\u1ed9t ng\u00e0y h\u00f4m \u0111\u00f3 th\u00ec ng\u01b0\u1eddi ch\u01a1i s\u1ebd th\u1eafng \u0111\u1eadm. Nh\u01b0ng ng\u01b0\u1ee3c l\u1ea1i th\u00ec s\u1ebd thua l\u1ed7 n\u1eb7ng. Do \u0111\u00f3, ng\u01b0\u1eddi ch\u01a1i c\u1ea7n s\u1eed d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p soi s\u1ed1 \u0111\u1ec3 t\u1ef7 l\u1ec7 tr\u00fang 99% l\u00e0 r\u1ea5t quan tr\u1ecdng.<\/li>\n<\/ul>\n\n\n\n<\/figure>\n\n\n\n
Soi s\u1ed1 g\u1ed3m soi s\u1ed1 \u0111\u1ec1, s\u1ed1 l\u00f4, l\u00f4 xi\u00ean, s\u1ed1 \u0111\u1ec1 3 c\u00e0ng<\/em><\/p>\n\n\n\n3. X\u00e1c su\u1ea5t tr\u00fang c\u1ee7a c\u00e1c con l\u00f4, \u0111\u1ec1 nh\u01b0 th\u1ebf n\u00e0o?<\/strong><\/h2>\n\n\n\n\u0110\u1ec3 c\u00f3 th\u1ec3 soi s\u1ed1 \u0111\u1ec1 t\u1ef7 l\u1ec7 tr\u00fang 99<\/strong> %<\/strong> th\u00ec ng\u01b0\u1eddi ch\u01a1i kh\u00f4ng n\u00ean b\u1ecf qua c\u00e1ch t\u00ednh x\u00e1c su\u1ea5t tr\u00fang c\u1ee7a c\u00e1c lo\u1ea1i con l\u00f4, \u0111\u1ec1 hi\u1ec7n nay. H\u01a1n n\u1eefa c\u00e1ch n\u00e0y c\u0169ng c\u1ef1c k\u1ef3 hi\u1ec7u qu\u1ea3 \u0111\u1ec3 ng\u01b0\u1eddi ch\u01a1i c\u00f3 th\u1ec3 l\u01b0\u1eddng tr\u01b0\u1edbc \u0111\u01b0\u1ee3c kh\u1ea3 n\u0103ng tr\u00fang hay tr\u01b0\u1ee3t. V\u1eady c\u00e1ch t\u00ednh x\u00e1c su\u1ea5t tr\u00fang l\u00f4 \u0111\u1ec1 n\u00e0y nh\u01b0 th\u1ebf n\u00e0o? C\u00f9ng tham kh\u1ea3o nh\u00e9.<\/p>\n\n\n\n3.1. T\u00ednh x\u00e1c su\u1ea5t tr\u00fang c\u1ee7a 1 con l\u00f4<\/em><\/strong><\/h3>\n\n\n\n\u0110\u1ec3 t\u00ednh x\u00e1c su\u1ea5t tr\u00fang l\u00f4, tr\u01b0\u1edbc h\u1ebft ch\u00fang ta c\u1ea7n t\u00ednh x\u00e1c su\u1ea5t t\u1ea1ch l\u00f4. C\u1ee5 th\u1ec3, trong x\u1ed5 s\u1ed1 c\u00f3 27 k\u1ebft qu\u1ea3 t\u01b0\u01a1ng \u1ee9ng v\u1edbi 27 l\u1ea7n quay, x\u00e1c su\u1ea5t m\u1ed7i l\u1ea7n t\u1ea1ch l\u00f4 l\u00e0 99 %. Nh\u01b0 v\u1eady t\u1ef7 l\u1ec7 t\u1ea1ch l\u00f4 khi quay \u0111\u1ebfn gi\u1ea3i cu\u1ed1i c\u00f9ng l\u00e0 0,99^27.<\/p>\n\n\n\n
T\u1eeb \u0111\u00e2y ta c\u00f3 th\u1ec3 t\u00ednh \u0111\u01b0\u1ee3c x\u00e1c su\u1ea5t tr\u00fang c\u1ee7a m\u1ed9t con l\u00f4 l\u00e0 = 1 \u2013 x\u00e1c su\u1ea5t t\u1ea1ch l\u00f4 = 1 \u2013 0,99^27 = 1 \u2013 0,7623 = 23,7657%.<\/p>\n\n\n\n
Nh\u01b0 v\u1eady, x\u00e1c su\u1ea5t tr\u00fang m\u1ed9t con l\u00f4 23,7657% v\u00e0 \u0111\u1ec3 c\u00f3 th\u1ec3 soi s\u1ed1 l\u00f4 c\u00f3 t\u1ef7 l\u1ec7 tr\u00fang 99 % th\u00ec ng\u01b0\u1eddi ch\u01a1i c\u1ea7n k\u1ebft h\u1ee3p v\u1edbi nh\u1eefng kinh nghi\u1ec7m v\u00e0 ph\u01b0\u01a1ng ph\u00e1p soi l\u00f4 c\u1ea7u \u0111\u1ec3 t\u00ecm ra con s\u1ed1 may m\u1eafn v\u00e0 ch\u00ednh x\u00e1c nh\u1ea5t.<\/p>\n\n\n\n<\/figure>\n\n\n\nM\u1ed7i con l\u00f4 \u0111\u1ec1 s\u1ebd c\u00f3 x\u00e1c su\u1ea5t tr\u00fang kh\u00e1c nhau m\u00e0 ng\u01b0\u1eddi ch\u01a1i c\u1ea7n n\u1eafm \u0111\u1ec3 t\u0103ng t\u1ef7 l\u1ec7 soi s\u1ed1 \u0111\u1eb9p<\/em><\/p>\n\n\n\n\u00bb<\/strong><\/mark> ch\u1ed1t s\u1ed1 d\u00e0n l\u00f4 XSMB h\u00f4m nay<\/mark><\/a><\/strong> \u00ab<\/strong><\/mark><\/p>\n\n\n\n3.2. X\u00e1c su\u1ea5t tr\u00fang trong l\u00f4 xi\u00ean 2 v\u00e0 xi\u00ean 3<\/em><\/strong><\/h3>\n\n\n\nL\u00f4 xi\u00ean 2 t\u1ee9c ng\u01b0\u1eddi ch\u01a1i ph\u1ea3i \u0111\u00e1nh 2 con l\u00f4 v\u00e0 n\u1ebfu tr\u00fang c\u1ea3 2 con th\u00ec m\u1edbi \u0111\u01b0\u1ee3c t\u00ednh \u0103n. Do \u0111\u00f3, mu\u00f4n soi s\u1ed1<\/strong> \u0111\u1ec1 t\u1ef7 l\u1ec7 tr\u00fang 99 %<\/strong> \u1edf con l\u00f4 xi\u00ean 2 n\u00e0y, ng\u01b0\u1eddi ch\u01a1i c\u1ea7n t\u00ednh \u0111\u01b0\u1ee3c x\u00e1c su\u1ea5t tr\u00fang c\u1ee7a n\u00f3 c\u1ee5 th\u1ec3 nh\u01b0 sau:<\/p>\n\n\n\nN\u1ebfu nh\u01b0 \u0111\u00e1nh l\u00f4 xi\u00ean 2 m\u00e0 ch\u1ec9 v\u1ec1 m\u1ed9t con ho\u1eb7c kh\u00f4ng v\u1ec1 con n\u00e0o th\u00ec t\u1ee9c l\u00e0 b\u1ea1n \u0111\u00e3 t\u1ea1ch. L\u00fac n\u00e0y, x\u00e1c su\u1ea5t kh\u00f4ng v\u1ec1 con n\u00e0o = 0,98 ^ 27 = 57,957%.<\/p>\n\n\n\n
X\u00e1c su\u1ea5t ch\u1ec9 v\u1ec1 1 con = 2 X x\u00e1c su\u1ea5t tr\u00fang 1 l\u00f4 X x\u00e1c su\u1ea5t kh\u00f4ng tr\u00fang l\u00f4 = 2 x 23,7657% x 0,99^27 = 36,238%.<\/p>\n\n\n\n
X\u00e1c su\u1ea5t kh\u00f4ng tr\u00fang l\u00f4 xi\u00ean 2 = x\u00e1c su\u1ea5t kh\u00f4ng c\u00f3 con n\u00e0o v\u1ec1 + x\u00e1c su\u1ea5t ch\u1ec9 v\u1ec1 1 con = 57,957% + 36,238% = 94,195%.<\/p>\n\n\n\n
T\u1eeb \u0111\u00f3, ta t\u00ednh \u0111\u01b0\u1ee3c x\u00e1c su\u1ea5t tr\u00fang l\u00f4 xi\u00ean 2 = 100% – x\u00e1c su\u1ea5t kh\u00f4ng tr\u00fang l\u00f4 xi\u00ean 2 = 100 – 94,195% = 5,8%.<\/p>\n\n\n\n
C\u00e1ch t\u00ednh x\u00e1c su\u1ea5t tr\u00fang l\u00f4 xi\u00ean 3 c\u0169ng t\u01b0\u01a1ng t\u1ef1 nh\u01b0 l\u00f4 xi\u00ean 2 v\u00e0 ta t\u00ednh \u0111\u01b0\u1ee3c l\u00e0 1,473%. Nh\u01b0 v\u1eady so v\u1edbi l\u00f4 xi\u00ean 2 th\u00ec l\u00f4 xi\u00ean 3 c\u00f3 t\u1ef7 l\u1ec7 tr\u00fang \u0111\u1ec1 cao h\u01a1n m\u1ed9t \u00edt.<\/p>\n\n\n\n
3.3. X\u00e1c su\u1ea5t tr\u00fang c\u1ee7a 1 con \u0111\u1ec1:<\/em><\/strong><\/h3>\n\n\n\nC\u00e1ch t\u00ednh x\u00e1c tr\u00fang c\u1ee7a m\u1ed9t con \u0111\u1ec1 r\u1ea5t \u0111\u01a1n gi\u1ea3n, b\u1edfi n\u00f3 ch\u1ec9 th\u01b0\u1eddng xuy\u00ean v\u1ec1 \u0111\u00fang m\u1ed9t con. Do \u0111\u00f3, c\u00e1ch t\u00ednh s\u1ebd l\u00e0 1 con trong t\u1ed5ng 100 s\u1ed1 th\u00ec ra x\u00e1c su\u1ea5t l\u00e0 1%. T\u1eeb \u0111\u00e2y, ng\u01b0\u1eddi ch\u01a1i c\u1ed1 g\u1eafng k\u1ebft h\u1ee3p c\u00e1c ph\u01b0\u01a1ng ph\u00e1p soi c\u1ea7u \u0111\u1ec1 nh\u01b0 soi theo gi\u1ea3i \u0111\u1eb7c bi\u1ec7t, theo l\u00f4 k\u00e9p, theo h\u00ecnh qu\u1ea3 tr\u00e1m\u2026\u0111\u1ec3 b\u1eaft \u0111\u1ec1 ch\u00ednh x\u00e1c nh\u1ea5t nh\u00e9.<\/p>\n\n\n\n<\/figure>\n\n\n\nM\u1ed7i lo\u1ea1i l\u00f4, \u0111\u1ec1 l\u1ea1i c\u00f3 x\u00e1c su\u1ea5t tr\u00fang kh\u00e1c nhau<\/em><\/p>\n\n\n\n4. Quy t\u1eafc soi s\u1ed1 \u0111\u1ec1 t\u1ef7 l\u1ec7 tr\u00fang 99 c\u1ea7n nh\u1edb<\/strong><\/h2>\n\n\n\nNgo\u00e0i vi\u1ec7c n\u1eafm r\u00f5 \u0111\u01b0\u1ee3c t\u1ef7 l\u1ec7 \u0103n c\u0169ng nh\u01b0 x\u00e1c su\u1ea5t tr\u00fang khi s\u00f4i s\u1ed1 l\u00f4 \u0111\u1ec1 tr\u00ean, th\u00ec \u0111\u1ec3 soi s\u1ed1 \u0111\u1ea1t t\u1ef7 l\u1ec7 cao ng\u01b0\u1eddi ch\u01a1i c\u00f2n ph\u1ea3i n\u1eafm \u0111\u01b0\u1ee3c m\u1ed9t s\u1ed1 quy t\u1eafc c\u01a1 b\u1ea3n sau:<\/p>\n\n\n\n
– Am hi\u1ec3u lu\u1eadt ch\u01a1i: \u0110\u00e2y l\u00e0 \u0111i\u1ec1u ki\u1ec7n mang t\u00ednh quy\u1ebft \u0111\u1ecbnh l\u1edbn t\u1edbi kh\u1ea3 n\u0103ng chi\u1ebfn th\u1eafng c\u1ee7a b\u1ea1n. Do \u0111\u00f3, d\u00f9 ch\u01a1i b\u1ea5t k\u1ef3 tr\u00f2 ch\u01a1i n\u00e0o th\u00ec ng\u01b0\u1eddi ch\u01a1i c\u0169ng c\u1ea7n n\u1eafm lu\u1eadt c\u1ee7a n\u00f3, nh\u1ea5t l\u00e0 v\u1edbi soi s\u1ed1 l\u00f4 \u0111\u1ec1 l\u1ea1i c\u00e0ng quan tr\u1ecdng.<\/p>\n\n\n\n
– Nghi\u00ean c\u1ee9u k\u1ef9 c\u00e0ng v\u00e0 quy\u1ebft \u0111o\u00e1n khi ch\u1ecdn s\u1ed1: Ch\u01a1i x\u1ed5 s\u1ed1, l\u00f4 \u0111\u1ec1 c\u0169ng l\u00e0 m\u1ed9t h\u00ecnh th\u1ee9c \u0111\u1ea7u t\u01b0, v\u00ec v\u1eady ch\u1eafc ch\u1eafn s\u1ebd c\u00f3 \u0111\u01b0\u1ee3c v\u00e0 m\u1ea5t, th\u1eafng thua l\u00e0 chuy\u1ec7n th\u01b0\u1eddng t\u00ecnh. Tuy nhi\u00ean n\u1ebfu b\u1ea1n bi\u1ebft c\u00e1ch chu\u1ea9n b\u1ecb th\u00ec t\u1ec9 l\u1ec7 r\u1ee7i ro s\u1ebd kh\u00f4ng qu\u00e1 l\u1edbn. H\u00e3y nghi\u00ean c\u1ee9u c\u00e1ch chia ti\u1ec1n v\u00e0o ti\u1ec1n cho m\u1ed7i ng\u00e0y th\u1eadt c\u1ee5 th\u1ec3, n\u1ebfu \u201ctr\u01b0\u1ee3t\u201d h\u00e3y bi\u1ebft xem x\u00e9t v\u00e0 r\u00fat kinh nghi\u1ec7m.<\/p>\n\n\n\n<\/figure>\n\n\n\nC\u1ea7n am hi\u1ec3u lu\u1eadt ch\u01a1i v\u00e0 c\u00f3 s\u1ef1 nghi\u00ean c\u1ee9u, t\u00ednh to\u00e1n k\u1ef9 khi soi s\u1ed1<\/em><\/p>\n\n\n\n– C\u1ea7n n\u1eafm r\u00f5 l\u1ecbch quay c\u1ee7a t\u1eebng v\u00f9ng mi\u1ec1n \u0111\u1ec3 t\u00ecm s\u1ed1 hay v\u1ec1: m\u1ed7i t\u1ec9nh, th\u00e0nh hay m\u1ed7i v\u00f9ng mi\u1ec1n s\u1ebd c\u00f3 nh\u1eefng l\u1ecbch quay kh\u00e1c nhau. Do \u0111\u00f3, ng\u01b0\u1eddi ch\u01a1i c\u1ea7n n\u1eafm r\u00f5 th\u1eddi gian v\u00e0 s\u1ed1 quay c\u1ee7a m\u1ed7i t\u1ec9nh, th\u00e0nh hay v\u00f9ng mi\u1ec1n n\u00e0y \u0111\u1ec3 t\u00ecm s\u1ed1 hay v\u1ec1 nh\u1ea5t, t\u1eeb \u0111\u00f3 m\u1edbi th\u1ef1c hi\u1ec7n soi s\u1ed1 \u0111\u1ec1 t\u1ef7 l\u1ec7 tr\u00fang 99 % <\/strong>\u0111\u01b0\u1ee3c.<\/p>\n\n\n\n– Kh\u00f4ng qu\u00e1 tham \u0111\u1ec3 \u0111\u00e1nh nhi\u1ec1u s\u1ed1 c\u00f9ng l\u00fac: Tr\u1eeb phi b\u1ea1n \u0111\u00e1nh l\u00f4 xi\u00ean th\u00ec m\u1edbi \u0111\u00e1nh nhi\u1ec1u s\u1ed1 nh\u01b0ng kh\u00f4ng qu\u00e1 4 con, c\u00f2n nh\u1eefng lo\u1ea1i l\u00f4 \u0111\u1ec1 kh\u00e1c tuy\u1ec7t \u0111\u1ed1i \u0111\u1eebng qu\u00e1 tham m\u00e0 \u0111\u00e1nh qu\u00e1 nhi\u1ec1u con. B\u1edfi b\u1ea1n s\u1ebd ph\u1ea3i \u0111\u1ea7u t\u01b0 r\u1ea5t nhi\u1ec1u v\u1ed1n nh\u01b0ng n\u1ebfu t\u1ea5t c\u1ea3 \u0111\u1ec1u kh\u00f4ng v\u1ec1 th\u00ec b\u1ea1n b\u1ecb thua l\u1ed7 kh\u00f4ng h\u1ec1 nh\u1ecf.<\/p>\n\n\n\n
– \u0110\u1eebng ng\u1ea1i h\u1ecdc h\u1ecfi t\u1eeb ng\u01b0\u1eddi kh\u00e1c: Nh\u01b0 \u0111\u00e3 n\u00f3i, trong l\u00f4 \u0111\u1ec1 kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 ch\u00ednh x\u00e1c 100%. Th\u1eadm ch\u00ed n\u00f3 lu\u00f4n kh\u00f4ng ng\u1eebng bi\u1ebfn \u0111\u1ed9ng, do \u0111\u00f3, \u0111\u1eebng ng\u1ea1i tham kh\u1ea3o \u00fd ki\u1ebfn, c\u00e1ch soi s\u1ed1 v\u00e0 \u0111\u00e1nh l\u00f4 \u0111\u1ec1 t\u1eeb ng\u01b0\u1eddi kh\u00e1c \u0111\u1ec3 h\u1ecdc h\u1ecfi th\u00eam kinh nghi\u1ec7m nh\u00e9.<\/p>\n\n\n\n<\/figure>\n\n\n\nKh\u00f4ng ng\u1eebng h\u1ecdc h\u1ecfi kinh nghi\u1ec7m t\u1eeb ng\u01b0\u1eddi kh\u00e1c<\/em><\/p>\n\n\n\nTr\u00ean \u0111\u00e2y l\u00e0 nh\u1eefng ki\u1ebfn th\u1ee9c quan tr\u1ecdng c\u1ea7n bi\u1ebft trong soi s\u1ed1 \u0111\u1ec1 t\u1ef7 l\u1ec7 tr\u00fang 99<\/strong> %. Hy v\u1ecdng s\u1ebd l\u00e0 nh\u1eefng th\u00f4ng tin h\u1eefu \u00edch cho ng\u01b0\u1eddi ch\u01a1i khi tham gia tr\u00f2 ch\u01a1i tr\u00fang s\u1ed1 n\u00e0y \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 cao nh\u1ea5t \u0111\u1ec3 l\u00e0m gi\u00e0u nhanh ch\u00f3ng.<\/p>\n\n\nch\u00ednh x\u00e1c \u0103n s\u1ed1 cao c\u1ea5p<\/h3>\n
<\/figure>\n\n\n\nSoi s\u1ed1 \u0111\u1ec1<\/em> t\u1ef7 l\u1ec7 tr\u00fang 99 % v\u00f4 c\u00f9ng quan tr\u1ecdng v\u1edbi m\u1ed7i ng\u01b0\u1eddi ch\u01a1i<\/em><\/p>\n\n\n\n \u00bb<\/strong><\/mark> d\u1ef1 \u0111o\u00e1n x\u1ed5 s\u1ed1 mi\u1ec1n b\u1eafc h\u00f4m nay<\/mark><\/a><\/strong> \u00ab<\/strong><\/mark><\/p>\n\n\n\n Soi s\u1ed1 g\u1ed3m soi s\u1ed1 \u0111\u1ec1, s\u1ed1 l\u00f4, l\u00f4 xi\u00ean, s\u1ed1 \u0111\u1ec1 3 c\u00e0ng<\/em><\/p>\n\n\n\n \u0110\u1ec3 c\u00f3 th\u1ec3 soi s\u1ed1 \u0111\u1ec1 t\u1ef7 l\u1ec7 tr\u00fang 99<\/strong> %<\/strong> th\u00ec ng\u01b0\u1eddi ch\u01a1i kh\u00f4ng n\u00ean b\u1ecf qua c\u00e1ch t\u00ednh x\u00e1c su\u1ea5t tr\u00fang c\u1ee7a c\u00e1c lo\u1ea1i con l\u00f4, \u0111\u1ec1 hi\u1ec7n nay. H\u01a1n n\u1eefa c\u00e1ch n\u00e0y c\u0169ng c\u1ef1c k\u1ef3 hi\u1ec7u qu\u1ea3 \u0111\u1ec3 ng\u01b0\u1eddi ch\u01a1i c\u00f3 th\u1ec3 l\u01b0\u1eddng tr\u01b0\u1edbc \u0111\u01b0\u1ee3c kh\u1ea3 n\u0103ng tr\u00fang hay tr\u01b0\u1ee3t. V\u1eady c\u00e1ch t\u00ednh x\u00e1c su\u1ea5t tr\u00fang l\u00f4 \u0111\u1ec1 n\u00e0y nh\u01b0 th\u1ebf n\u00e0o? C\u00f9ng tham kh\u1ea3o nh\u00e9.<\/p>\n\n\n\n \u0110\u1ec3 t\u00ednh x\u00e1c su\u1ea5t tr\u00fang l\u00f4, tr\u01b0\u1edbc h\u1ebft ch\u00fang ta c\u1ea7n t\u00ednh x\u00e1c su\u1ea5t t\u1ea1ch l\u00f4. C\u1ee5 th\u1ec3, trong x\u1ed5 s\u1ed1 c\u00f3 27 k\u1ebft qu\u1ea3 t\u01b0\u01a1ng \u1ee9ng v\u1edbi 27 l\u1ea7n quay, x\u00e1c su\u1ea5t m\u1ed7i l\u1ea7n t\u1ea1ch l\u00f4 l\u00e0 99 %. Nh\u01b0 v\u1eady t\u1ef7 l\u1ec7 t\u1ea1ch l\u00f4 khi quay \u0111\u1ebfn gi\u1ea3i cu\u1ed1i c\u00f9ng l\u00e0 0,99^27.<\/p>\n\n\n\n T\u1eeb \u0111\u00e2y ta c\u00f3 th\u1ec3 t\u00ednh \u0111\u01b0\u1ee3c x\u00e1c su\u1ea5t tr\u00fang c\u1ee7a m\u1ed9t con l\u00f4 l\u00e0 = 1 \u2013 x\u00e1c su\u1ea5t t\u1ea1ch l\u00f4 = 1 \u2013 0,99^27 = 1 \u2013 0,7623 = 23,7657%.<\/p>\n\n\n\n Nh\u01b0 v\u1eady, x\u00e1c su\u1ea5t tr\u00fang m\u1ed9t con l\u00f4 23,7657% v\u00e0 \u0111\u1ec3 c\u00f3 th\u1ec3 soi s\u1ed1 l\u00f4 c\u00f3 t\u1ef7 l\u1ec7 tr\u00fang 99 % th\u00ec ng\u01b0\u1eddi ch\u01a1i c\u1ea7n k\u1ebft h\u1ee3p v\u1edbi nh\u1eefng kinh nghi\u1ec7m v\u00e0 ph\u01b0\u01a1ng ph\u00e1p soi l\u00f4 c\u1ea7u \u0111\u1ec3 t\u00ecm ra con s\u1ed1 may m\u1eafn v\u00e0 ch\u00ednh x\u00e1c nh\u1ea5t.<\/p>\n\n\n\n M\u1ed7i con l\u00f4 \u0111\u1ec1 s\u1ebd c\u00f3 x\u00e1c su\u1ea5t tr\u00fang kh\u00e1c nhau m\u00e0 ng\u01b0\u1eddi ch\u01a1i c\u1ea7n n\u1eafm \u0111\u1ec3 t\u0103ng t\u1ef7 l\u1ec7 soi s\u1ed1 \u0111\u1eb9p<\/em><\/p>\n\n\n\n \u00bb<\/strong><\/mark> ch\u1ed1t s\u1ed1 d\u00e0n l\u00f4 XSMB h\u00f4m nay<\/mark><\/a><\/strong> \u00ab<\/strong><\/mark><\/p>\n\n\n\n L\u00f4 xi\u00ean 2 t\u1ee9c ng\u01b0\u1eddi ch\u01a1i ph\u1ea3i \u0111\u00e1nh 2 con l\u00f4 v\u00e0 n\u1ebfu tr\u00fang c\u1ea3 2 con th\u00ec m\u1edbi \u0111\u01b0\u1ee3c t\u00ednh \u0103n. Do \u0111\u00f3, mu\u00f4n soi s\u1ed1<\/strong> \u0111\u1ec1 t\u1ef7 l\u1ec7 tr\u00fang 99 %<\/strong> \u1edf con l\u00f4 xi\u00ean 2 n\u00e0y, ng\u01b0\u1eddi ch\u01a1i c\u1ea7n t\u00ednh \u0111\u01b0\u1ee3c x\u00e1c su\u1ea5t tr\u00fang c\u1ee7a n\u00f3 c\u1ee5 th\u1ec3 nh\u01b0 sau:<\/p>\n\n\n\n N\u1ebfu nh\u01b0 \u0111\u00e1nh l\u00f4 xi\u00ean 2 m\u00e0 ch\u1ec9 v\u1ec1 m\u1ed9t con ho\u1eb7c kh\u00f4ng v\u1ec1 con n\u00e0o th\u00ec t\u1ee9c l\u00e0 b\u1ea1n \u0111\u00e3 t\u1ea1ch. L\u00fac n\u00e0y, x\u00e1c su\u1ea5t kh\u00f4ng v\u1ec1 con n\u00e0o = 0,98 ^ 27 = 57,957%.<\/p>\n\n\n\n X\u00e1c su\u1ea5t ch\u1ec9 v\u1ec1 1 con = 2 X x\u00e1c su\u1ea5t tr\u00fang 1 l\u00f4 X x\u00e1c su\u1ea5t kh\u00f4ng tr\u00fang l\u00f4 = 2 x 23,7657% x 0,99^27 = 36,238%.<\/p>\n\n\n\n X\u00e1c su\u1ea5t kh\u00f4ng tr\u00fang l\u00f4 xi\u00ean 2 = x\u00e1c su\u1ea5t kh\u00f4ng c\u00f3 con n\u00e0o v\u1ec1 + x\u00e1c su\u1ea5t ch\u1ec9 v\u1ec1 1 con = 57,957% + 36,238% = 94,195%.<\/p>\n\n\n\n T\u1eeb \u0111\u00f3, ta t\u00ednh \u0111\u01b0\u1ee3c x\u00e1c su\u1ea5t tr\u00fang l\u00f4 xi\u00ean 2 = 100% – x\u00e1c su\u1ea5t kh\u00f4ng tr\u00fang l\u00f4 xi\u00ean 2 = 100 – 94,195% = 5,8%.<\/p>\n\n\n\n C\u00e1ch t\u00ednh x\u00e1c su\u1ea5t tr\u00fang l\u00f4 xi\u00ean 3 c\u0169ng t\u01b0\u01a1ng t\u1ef1 nh\u01b0 l\u00f4 xi\u00ean 2 v\u00e0 ta t\u00ednh \u0111\u01b0\u1ee3c l\u00e0 1,473%. Nh\u01b0 v\u1eady so v\u1edbi l\u00f4 xi\u00ean 2 th\u00ec l\u00f4 xi\u00ean 3 c\u00f3 t\u1ef7 l\u1ec7 tr\u00fang \u0111\u1ec1 cao h\u01a1n m\u1ed9t \u00edt.<\/p>\n\n\n\n C\u00e1ch t\u00ednh x\u00e1c tr\u00fang c\u1ee7a m\u1ed9t con \u0111\u1ec1 r\u1ea5t \u0111\u01a1n gi\u1ea3n, b\u1edfi n\u00f3 ch\u1ec9 th\u01b0\u1eddng xuy\u00ean v\u1ec1 \u0111\u00fang m\u1ed9t con. Do \u0111\u00f3, c\u00e1ch t\u00ednh s\u1ebd l\u00e0 1 con trong t\u1ed5ng 100 s\u1ed1 th\u00ec ra x\u00e1c su\u1ea5t l\u00e0 1%. T\u1eeb \u0111\u00e2y, ng\u01b0\u1eddi ch\u01a1i c\u1ed1 g\u1eafng k\u1ebft h\u1ee3p c\u00e1c ph\u01b0\u01a1ng ph\u00e1p soi c\u1ea7u \u0111\u1ec1 nh\u01b0 soi theo gi\u1ea3i \u0111\u1eb7c bi\u1ec7t, theo l\u00f4 k\u00e9p, theo h\u00ecnh qu\u1ea3 tr\u00e1m\u2026\u0111\u1ec3 b\u1eaft \u0111\u1ec1 ch\u00ednh x\u00e1c nh\u1ea5t nh\u00e9.<\/p>\n\n\n\n M\u1ed7i lo\u1ea1i l\u00f4, \u0111\u1ec1 l\u1ea1i c\u00f3 x\u00e1c su\u1ea5t tr\u00fang kh\u00e1c nhau<\/em><\/p>\n\n\n\n Ngo\u00e0i vi\u1ec7c n\u1eafm r\u00f5 \u0111\u01b0\u1ee3c t\u1ef7 l\u1ec7 \u0103n c\u0169ng nh\u01b0 x\u00e1c su\u1ea5t tr\u00fang khi s\u00f4i s\u1ed1 l\u00f4 \u0111\u1ec1 tr\u00ean, th\u00ec \u0111\u1ec3 soi s\u1ed1 \u0111\u1ea1t t\u1ef7 l\u1ec7 cao ng\u01b0\u1eddi ch\u01a1i c\u00f2n ph\u1ea3i n\u1eafm \u0111\u01b0\u1ee3c m\u1ed9t s\u1ed1 quy t\u1eafc c\u01a1 b\u1ea3n sau:<\/p>\n\n\n\n – Am hi\u1ec3u lu\u1eadt ch\u01a1i: \u0110\u00e2y l\u00e0 \u0111i\u1ec1u ki\u1ec7n mang t\u00ednh quy\u1ebft \u0111\u1ecbnh l\u1edbn t\u1edbi kh\u1ea3 n\u0103ng chi\u1ebfn th\u1eafng c\u1ee7a b\u1ea1n. Do \u0111\u00f3, d\u00f9 ch\u01a1i b\u1ea5t k\u1ef3 tr\u00f2 ch\u01a1i n\u00e0o th\u00ec ng\u01b0\u1eddi ch\u01a1i c\u0169ng c\u1ea7n n\u1eafm lu\u1eadt c\u1ee7a n\u00f3, nh\u1ea5t l\u00e0 v\u1edbi soi s\u1ed1 l\u00f4 \u0111\u1ec1 l\u1ea1i c\u00e0ng quan tr\u1ecdng.<\/p>\n\n\n\n – Nghi\u00ean c\u1ee9u k\u1ef9 c\u00e0ng v\u00e0 quy\u1ebft \u0111o\u00e1n khi ch\u1ecdn s\u1ed1: Ch\u01a1i x\u1ed5 s\u1ed1, l\u00f4 \u0111\u1ec1 c\u0169ng l\u00e0 m\u1ed9t h\u00ecnh th\u1ee9c \u0111\u1ea7u t\u01b0, v\u00ec v\u1eady ch\u1eafc ch\u1eafn s\u1ebd c\u00f3 \u0111\u01b0\u1ee3c v\u00e0 m\u1ea5t, th\u1eafng thua l\u00e0 chuy\u1ec7n th\u01b0\u1eddng t\u00ecnh. Tuy nhi\u00ean n\u1ebfu b\u1ea1n bi\u1ebft c\u00e1ch chu\u1ea9n b\u1ecb th\u00ec t\u1ec9 l\u1ec7 r\u1ee7i ro s\u1ebd kh\u00f4ng qu\u00e1 l\u1edbn. H\u00e3y nghi\u00ean c\u1ee9u c\u00e1ch chia ti\u1ec1n v\u00e0o ti\u1ec1n cho m\u1ed7i ng\u00e0y th\u1eadt c\u1ee5 th\u1ec3, n\u1ebfu \u201ctr\u01b0\u1ee3t\u201d h\u00e3y bi\u1ebft xem x\u00e9t v\u00e0 r\u00fat kinh nghi\u1ec7m.<\/p>\n\n\n\n C\u1ea7n am hi\u1ec3u lu\u1eadt ch\u01a1i v\u00e0 c\u00f3 s\u1ef1 nghi\u00ean c\u1ee9u, t\u00ednh to\u00e1n k\u1ef9 khi soi s\u1ed1<\/em><\/p>\n\n\n\n – C\u1ea7n n\u1eafm r\u00f5 l\u1ecbch quay c\u1ee7a t\u1eebng v\u00f9ng mi\u1ec1n \u0111\u1ec3 t\u00ecm s\u1ed1 hay v\u1ec1: m\u1ed7i t\u1ec9nh, th\u00e0nh hay m\u1ed7i v\u00f9ng mi\u1ec1n s\u1ebd c\u00f3 nh\u1eefng l\u1ecbch quay kh\u00e1c nhau. Do \u0111\u00f3, ng\u01b0\u1eddi ch\u01a1i c\u1ea7n n\u1eafm r\u00f5 th\u1eddi gian v\u00e0 s\u1ed1 quay c\u1ee7a m\u1ed7i t\u1ec9nh, th\u00e0nh hay v\u00f9ng mi\u1ec1n n\u00e0y \u0111\u1ec3 t\u00ecm s\u1ed1 hay v\u1ec1 nh\u1ea5t, t\u1eeb \u0111\u00f3 m\u1edbi th\u1ef1c hi\u1ec7n soi s\u1ed1 \u0111\u1ec1 t\u1ef7 l\u1ec7 tr\u00fang 99 % <\/strong>\u0111\u01b0\u1ee3c.<\/p>\n\n\n\n – Kh\u00f4ng qu\u00e1 tham \u0111\u1ec3 \u0111\u00e1nh nhi\u1ec1u s\u1ed1 c\u00f9ng l\u00fac: Tr\u1eeb phi b\u1ea1n \u0111\u00e1nh l\u00f4 xi\u00ean th\u00ec m\u1edbi \u0111\u00e1nh nhi\u1ec1u s\u1ed1 nh\u01b0ng kh\u00f4ng qu\u00e1 4 con, c\u00f2n nh\u1eefng lo\u1ea1i l\u00f4 \u0111\u1ec1 kh\u00e1c tuy\u1ec7t \u0111\u1ed1i \u0111\u1eebng qu\u00e1 tham m\u00e0 \u0111\u00e1nh qu\u00e1 nhi\u1ec1u con. B\u1edfi b\u1ea1n s\u1ebd ph\u1ea3i \u0111\u1ea7u t\u01b0 r\u1ea5t nhi\u1ec1u v\u1ed1n nh\u01b0ng n\u1ebfu t\u1ea5t c\u1ea3 \u0111\u1ec1u kh\u00f4ng v\u1ec1 th\u00ec b\u1ea1n b\u1ecb thua l\u1ed7 kh\u00f4ng h\u1ec1 nh\u1ecf.<\/p>\n\n\n\n – \u0110\u1eebng ng\u1ea1i h\u1ecdc h\u1ecfi t\u1eeb ng\u01b0\u1eddi kh\u00e1c: Nh\u01b0 \u0111\u00e3 n\u00f3i, trong l\u00f4 \u0111\u1ec1 kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 ch\u00ednh x\u00e1c 100%. Th\u1eadm ch\u00ed n\u00f3 lu\u00f4n kh\u00f4ng ng\u1eebng bi\u1ebfn \u0111\u1ed9ng, do \u0111\u00f3, \u0111\u1eebng ng\u1ea1i tham kh\u1ea3o \u00fd ki\u1ebfn, c\u00e1ch soi s\u1ed1 v\u00e0 \u0111\u00e1nh l\u00f4 \u0111\u1ec1 t\u1eeb ng\u01b0\u1eddi kh\u00e1c \u0111\u1ec3 h\u1ecdc h\u1ecfi th\u00eam kinh nghi\u1ec7m nh\u00e9.<\/p>\n\n\n\n Kh\u00f4ng ng\u1eebng h\u1ecdc h\u1ecfi kinh nghi\u1ec7m t\u1eeb ng\u01b0\u1eddi kh\u00e1c<\/em><\/p>\n\n\n\n Tr\u00ean \u0111\u00e2y l\u00e0 nh\u1eefng ki\u1ebfn th\u1ee9c quan tr\u1ecdng c\u1ea7n bi\u1ebft trong soi s\u1ed1 \u0111\u1ec1 t\u1ef7 l\u1ec7 tr\u00fang 99<\/strong> %. Hy v\u1ecdng s\u1ebd l\u00e0 nh\u1eefng th\u00f4ng tin h\u1eefu \u00edch cho ng\u01b0\u1eddi ch\u01a1i khi tham gia tr\u00f2 ch\u01a1i tr\u00fang s\u1ed1 n\u00e0y \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 cao nh\u1ea5t \u0111\u1ec3 l\u00e0m gi\u00e0u nhanh ch\u00f3ng.<\/p>\n\n\n2. Soi s\u1ed1 g\u1ed3m nh\u1eefng lo\u1ea1i n\u00e0o?<\/strong><\/h2>\n\n\n\n
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<\/figure>\n\n\n\n3. X\u00e1c su\u1ea5t tr\u00fang c\u1ee7a c\u00e1c con l\u00f4, \u0111\u1ec1 nh\u01b0 th\u1ebf n\u00e0o?<\/strong><\/h2>\n\n\n\n
3.1. T\u00ednh x\u00e1c su\u1ea5t tr\u00fang c\u1ee7a 1 con l\u00f4<\/em><\/strong><\/h3>\n\n\n\n
<\/figure>\n\n\n\n3.2. X\u00e1c su\u1ea5t tr\u00fang trong l\u00f4 xi\u00ean 2 v\u00e0 xi\u00ean 3<\/em><\/strong><\/h3>\n\n\n\n
3.3. X\u00e1c su\u1ea5t tr\u00fang c\u1ee7a 1 con \u0111\u1ec1:<\/em><\/strong><\/h3>\n\n\n\n
<\/figure>\n\n\n\n4. Quy t\u1eafc soi s\u1ed1 \u0111\u1ec1 t\u1ef7 l\u1ec7 tr\u00fang 99 c\u1ea7n nh\u1edb<\/strong><\/h2>\n\n\n\n
<\/figure>\n\n\n\n<\/figure>\n\n\n\nch\u00ednh x\u00e1c \u0103n s\u1ed1 cao c\u1ea5p<\/h3>\n