{"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

X\u00e1c su\u1ea5t l\u00f4 \u0111\u1ec1 l\u00e0 g\u00ec?<\/h2>\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

T\u1ea1i sao c\u1ea7n ph\u1ea3i t\u00ednh x\u00e1c su\u1ea5t l\u00f4 \u0111\u1ec1?<\/h2>\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

C\u00e1ch t\u00ednh x\u00e1c su\u1ea5t l\u00f4 \u0111\u1ec1 theo to\u00e1n h\u1ecdc chi ti\u1ebft<\/h2>\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

\"C\u00f3<\/p>\n

a. C\u00e1ch t\u00ednh x\u00e1c su\u1ea5t tr\u00fang l\u00f4<\/h3>\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