{"id":17944,"date":"2024-03-02T18:00:14","date_gmt":"2024-03-02T18:00:14","guid":{"rendered":"https:\/\/soicau6092.minhngocxoso.com\/?p=17944"},"modified":"2024-03-02T18:00:14","modified_gmt":"2024-03-02T18:00:14","slug":"cach-tinh-xac-suat-lo-de-theo-toan-hoc-2024","status":"publish","type":"post","link":"https:\/\/soicauvip366.net\/cach-tinh-xac-suat-lo-de-theo-toan-hoc-2024\/","title":{"rendered":"C\u00e1ch t\u00ednh x\u00e1c su\u1ea5t l\u00f4 \u0111\u1ec1 theo to\u00e1n h\u1ecdc 2024"},"content":{"rendered":"
L\u00f4 \u0111\u1ec1 l\u00e0 m\u1ed9t tr\u00f2 ch\u01a1i thi\u00ean bi\u1ebfn v\u1ea1n h\u00f3a v\u00e0 \u0111\u1ec3 chi\u1ebfn th\u1eafng \u0111\u01b0\u1ee3c trong tr\u00f2 ch\u01a1i n\u00e0y qu\u1ea3 th\u1eadt l\u00e0 m\u1ed9t th\u1eed th\u00e1ch kh\u00f4ng h\u1ec1 \u0111\u01a1n gi\u1ea3n. Bi\u1ebft \u0111\u01b0\u1ee3c c\u00e1ch t\u00ednh x\u00e1c su\u1ea5t l\u00f4 \u0111\u1ec1 s\u1ebd gi\u00fap m\u1ecdi ng\u01b0\u1eddi t\u1ed1i \u01b0u h\u00f3a \u0111\u01b0\u1ee3c s\u1ed1 ti\u1ec1n \u0111\u1ea7u t\u01b0 v\u00e0 d\u1ec5 d\u00e0ng h\u01a1n trong vi\u1ec7c t\u00ecm \u0111\u01b0\u1ee3c chi\u1ebfn th\u1eafng cho m\u00ecnh.<\/p>\n
Kh\u00f4ng ch\u1ec9 ri\u00eang l\u00f4 \u0111\u1ec1 m\u00e0 h\u1ea7u h\u1ebft t\u1ea5t c\u1ea3 nh\u1eefng tr\u00f2 ch\u01a1i m\u00e0 khi tham gia ch\u00fang ta \u0111\u1ec1u ph\u1ea3i t\u00ednh to\u00e1n kh\u1ea3 n\u0103ng tr\u00fang \u0111\u01b0\u1ee3c gi\u1ea3i cao nh\u1ea5t l\u00e0 bao nhi\u00eau ph\u1ea7n tr\u0103m \u0111\u1ec3 t\u1eeb \u0111\u00e2y t\u00ednh to\u00e1n \u0111\u01b0\u1ee3c chi\u1ebfn l\u01b0\u1ee3c \u0111\u1ea7u t\u01b0 sao cho ph\u00f9 h\u1ee3p nh\u1ea5t.<\/p>\n
N\u1ebfu so s\u00e1nh v\u1edbi t\u1ec9 l\u1ec7 tr\u00fang v\u00e9 s\u1ed1 th\u00ec s\u1ed1 \u0111\u1ec1 s\u1ebd c\u00f3 kh\u1ea3 n\u0103ng tr\u00fang cao h\u01a1n, \u0111\u00e2y c\u0169ng l\u00e0 c\u01a1 h\u1ed9i \u0111\u1ec3 m\u1ecdi ng\u01b0\u1eddi ki\u1ebfm th\u00eam thu nh\u1eadp cho m\u00ecnh m\u1ed7i ng\u00e0y.<\/p>\n
Hi\u1ec7n nay tr\u00f2 ch\u01a1i n\u00e0y \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n th\u00e0nh nhi\u1ec1u d\u1ea1ng kh\u00e1c nhau: Xi\u00ean 2, xi\u00ean 3, l\u00f4 tr\u01b0\u1ee3t, bao l\u00f4, \u0111\u00e1nh \u0111\u1ec1,\u2026 m\u1ed7i lo\u1ea1i h\u00ecnh s\u1ebd c\u00f3 m\u1ed9t t\u1ec9 l\u1ec7 tr\u00fang kh\u00e1c nhau n\u00ean m\u1ecdi ng\u01b0\u1eddi c\u1ea7n bi\u1ebft r\u00f5 \u0111\u01b0\u1ee3c \u0111i\u1ec1u n\u00e0y \u0111\u1ec3 l\u1ef1a ch\u1ecdn cho m\u00ecnh m\u1ed9t c\u00e1ch ch\u01a1i ph\u00f9 h\u1ee3p nh\u1ea5t.<\/p>\n
Vi\u1ec7c t\u00ecm hi\u1ec3u v\u00e0 ph\u00e2n t\u00edch c\u1ee5 th\u1ec3 t\u1ec9 l\u1ec7 tr\u00fang \u0111\u01b0\u1ee3c con l\u00f4 A trong h\u00f4m nay l\u00e0 bao nhi\u00eau ph\u1ea7n tr\u0103m, ch\u00fang ta s\u1ebd d\u1ec5 d\u00e0ng t\u00ednh to\u00e1n \u0111\u01b0\u1ee3c n\u00ean ch\u01a1i \u201ct\u1ea5t tay\u201d hay l\u1ef1a ch\u1ecdn l\u1ed1i ch\u01a1i nu\u00f4i 3 \u2013 5 ng\u00e0y an to\u00e0n s\u1ebd ph\u00f9 h\u1ee3p h\u01a1n.<\/p>\n
D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00f4ng th\u1ee9c t\u00ednh c\u1ee5 th\u1ec3 nh\u1ea5t, m\u1eddi m\u1ecdi ng\u01b0\u1eddi c\u00f9ng tham kh\u1ea3o.<\/p>\n
<\/p>\n
C\u00f4ng th\u1ee9c \u0103n \u0111\u01b0\u1ee3c con l\u00f4 s\u1ebd \u0111\u01b0\u1ee3c t\u00ednh nh\u01b0 sau: [1 \u2013 [(100 \u2013 n)% m\u0169 27)] x 10 (v\u1edbi n l\u00e0 s\u1ed1 l\u01b0\u1ee3ng con s\u1ed1 \u0111\u01b0\u1ee3c \u0111\u1ea7u t\u01b0).<\/p>\n
V\u1eady % \u0103n \u0111\u01b0\u1ee3c n\u1ebfu \u0111\u00e1nh 1 con l\u00f4: [1 \u2013 [(100 \u2013 1)% m\u0169 27)] x 10 = 23,7%.<\/p>\n
T\u01b0\u01a1ng t\u1ef1 c\u00f4ng th\u1ee9c tr\u00ean ch\u00fang ta c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng suy ra \u0111\u01b0\u1ee3c:<\/p>\n
\u0110\u00e2y l\u00e0 c\u00e1ch t\u00ednh \u0111\u1ed1i v\u1edbi c\u00e1c \u0111\u00e0i x\u1ed5 s\u1ed1 Mi\u1ec1n B\u1eafc (27 gi\u1ea3i), \u0111\u1ed1i v\u1edbi XSMN v\u00e0 XSMT k\u1ebft qu\u1ea3 n\u00e0y s\u1ebd c\u00f3 ch\u00fat thay \u0111\u1ed5i v\u00ec b\u1ea3ng KQXS m\u1ed7i ng\u00e0y ch\u1ec9 c\u00f3 18 gi\u1ea3i, m\u1ecdi ng\u01b0\u1eddi ch\u1ec9 c\u1ea7n thay \u0111\u1ed5i con s\u1ed1 v\u00e0 \u00e1p d\u1ee5ng theo c\u00f4ng th\u1ee9c tr\u00ean l\u00e0 \u0111\u01b0\u1ee3c.<\/p>\n
Kh\u00f4ng ph\u1ee9c t\u1ea1p nh\u01b0 c\u00e1ch ch\u01a1i l\u00f4, c\u00e1ch t\u00ednh t\u1ec9 l\u1ec7 tr\u00fang con \u0111\u1ec1 c\u00f3 ph\u1ea7n \u0111\u01a1n gi\u1ea3n h\u01a1n \u0111\u00f4i ch\u00fat. \u0110\u1ed1i v\u1edbi c\u1ea3 3 Mi\u1ec1n B\u1eafc \u2013 Trung \u2013 Nam th\u00ec ch\u1ec9 c\u1ea7n b\u1ea1n \u0111o\u00e1n tr\u00fang \u0111\u01b0\u1ee3c 1 trong 100 con s\u1ed1 t\u1eeb 00 \u2013 99 c\u1ee7a 2 s\u1ed1 cu\u1ed1i c\u1ee7a gi\u1ea3i \u0111\u1eb7c bi\u1ec7t l\u00e0 d\u00e0nh \u0111\u01b0\u1ee3c chi\u1ebfn th\u1eafng. T\u1eeb \u0111\u00e2y, ch\u00fang ta c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng suy ra \u0111\u01b0\u1ee3c % \u0103n \u0111\u01b0\u1ee3c con \u0111\u1ec1 s\u1ebd l\u00e0 1%.<\/p>\n
<\/p>\n
V\u00ec x\u00e1c su\u1ea5t tr\u00fang th\u1ea5p h\u01a1n c\u00e1ch ch\u01a1i l\u00f4 t\u00f4 n\u00ean s\u1ed1 ti\u1ec1n th\u01b0\u1edfng c\u1ee7a th\u1ec3 lo\u1ea1i n\u00e0y c\u0169ng cao h\u01a1n r\u1ea5t nhi\u1ec1u, c\u1ee5 th\u1ec3:<\/p>\n
V\u1edbi c\u01a1 ch\u1ebf tr\u1ea3 th\u01b0\u1edfng kh\u00e1 cao, b\u1ea1n c\u00f3 th\u1ec3 c\u00e2n nh\u1eafc \u0111\u1ea7u t\u01b0 cho nhi\u1ec1u con \u0111\u1ec1 c\u00f9ng l\u00fac trong m\u1ed9t k\u1ef3 quay \u0111\u1ec3 t\u0103ng kh\u1ea3 n\u0103ng chi\u1ebfn th\u1eafng cho m\u00ecnh.<\/p>\n
L\u00f4 xi\u00ean 2 l\u00e0 c\u00e1ch ch\u01a1i m\u00e0 b\u1ea1n c\u1ea7n ph\u1ea3i d\u1ef1 \u0111o\u00e1n tr\u00fang \u0111\u01b0\u1ee3c c\u1ea3 2 con l\u00f4 t\u00f4 s\u1ebd v\u1ec1 trong c\u00f9ng m\u1ed9t k\u1ef3 quay th\u01b0\u1edfng, v\u00ec th\u1ebf ta s\u1ebd c\u00f3 c\u00f4ng th\u1ee9c t\u00ednh nh\u01b0 sau:<\/p>\n
=> % \u0103n \u0111\u01b0\u1ee3c xi\u00ean 2 s\u1ebd l\u00e0: 100% \u2013 94,1% = 5,8%.<\/p>\n
L\u00f4 xi\u00ean 3 l\u00e0 c\u00e1ch ch\u01a1i m\u00e0 b\u1ea1n c\u1ea7n d\u1ef1 \u0111o\u00e1n tr\u00fang \u0111\u01b0\u1ee3c c\u1ea3 3 con loto s\u1ebd v\u1ec1 trong c\u00f9ng m\u1ed9t k\u1ef3 m\u1edf th\u01b0\u1edfng v\u1edbi % tr\u00fang chi ti\u1ebft \u0111\u01b0\u1ee3c t\u00ednh nh\u01b0 sau:<\/p>\n
\u0110\u1ed1i v\u1edbi m\u1ed9t c\u01b0\u1ee3c th\u1ee7 chuy\u00ean nghi\u1ec7p th\u00ec vi\u1ec7c n\u1eafm \u0111\u01b0\u1ee3c ki\u1ebfn th\u1ee9c v\u1ec1 c\u00e1ch t\u00ednh x\u00e1c su\u1ea5t l\u00f4 \u0111\u1ec1<\/strong> l\u00e0 v\u00f4 c\u00f9ng quan tr\u1ecdng. Tuy nhi\u00ean \u0111\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 y\u1ebfu t\u1ed1 duy nh\u1ea5t c\u00f3 th\u1ec3 gi\u00fap cho ch\u00fang ta d\u00e0nh \u0111\u01b0\u1ee3c chi\u1ebfn th\u1eafng, m\u1ed7i ng\u01b0\u1eddi c\u1ea7n ph\u1ea3i t\u00edch l\u0169y th\u00eam r\u1ea5t nhi\u1ec1u kinh nghi\u1ec7m v\u00e0 ki\u1ebfn th\u1ee9c trong vi\u1ec7c b\u1eaft s\u1ed1 th\u00ec kh\u1ea3 n\u0103ng th\u00e0nh c\u00f4ng s\u1ebd cao h\u01a1n r\u1ea5t nhi\u1ec1u.<\/p>\n Ngo\u00e0i ra, l\u00f4 \u0111\u1ec1 l\u00e0 m\u1ed9t tr\u00f2 ch\u01a1i b\u1ecb ph\u00e1p lu\u1eadt ng\u0103n c\u1ea5m, b\u1ea1n n\u00ean thay \u0111\u1ed5i sang ch\u01a1i c\u00e1c s\u1ea3n ph\u1ea9m x\u1ed5 s\u1ed1 l\u00f4 t\u00f4 Mi\u1ec1n B\u1eafc v\u1edbi c\u01a1 c\u1ea5u gi\u1ea3i th\u01b0\u1edfng v\u00e0 c\u00e1ch ch\u01a1i c\u0169ng t\u01b0\u01a1ng t\u1ef1 nh\u01b0 tr\u00ean nh\u00e9.<\/p>\nchuy\u00ean gia ch\u1ed1t s\u1ed1 v\u00edp si\u00eau h\u00f3t<\/strong><\/span><\/h3>\n