{"id":1390,"date":"2021-06-11T10:43:10","date_gmt":"2021-06-11T10:43:10","guid":{"rendered":"https:\/\/mb668s.com\/cam-nang-7mb66-xoc-dia\/?p=1390"},"modified":"2026-04-10T09:00:31","modified_gmt":"2026-04-10T02:00:31","slug":"trung-vi-la-gi-va-co-gi-khac-so-voi-gia-tri-trung-binh","status":"publish","type":"post","link":"https:\/\/mb668s.com\/cam-nang-7mb66-xoc-dia\/kien-thuc-kinh-te\/trung-vi-la-gi-va-co-gi-khac-so-voi-gia-tri-trung-binh","title":{"rendered":"Trung v\u1ecb l\u00e0 g\u00ec v\u00e0 c\u00f3 g\u00ec kh\u00e1c so v\u1edbi gi\u00e1 tr\u1ecb trung b\u00ecnh"},"content":{"rendered":"\n
Trung v\u1ecb l\u00e0 g\u00ec? Trung v\u1ecb l\u00e0 s\u1ed1 \u1edf gi\u1eefa c\u1ee7a t\u1eadp d\u1eef li\u1ec7u. Trung v\u1ecb \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng thay cho gi\u00e1 tr\u1ecb trung b\u00ecnh trong khi c\u00f3 c\u00e1c y\u1ebfu t\u1ed1 ngo\u1ea1i lai xu\u1ea5t hi\u1ec7n c\u00f3 th\u1ec3 l\u00e0m sai l\u1ec7ch gi\u00e1 tr\u1ecb trung b\u00ecnh.<\/p>\n\n\n\n C\u00f4ng th\u1ee9c trung b\u00ecnh l\u00e0 {(n + 1) \u00f7 2} s\u1ed1 th\u1ee9 t\u1ef1, trong \u0111\u00f3 \u201cn\u201d l\u00e0 s\u1ed1 m\u1ee5c trong t\u1eadp h\u1ee3p.<\/p>\n\n\n\n \u0110\u1ec3 t\u00ecm s\u1ed1 trung v\u1ecb, tr\u01b0\u1edbc ti\u00ean h\u00e3y s\u1eafp x\u1ebfp th\u1ee9 t\u1ef1 c\u00e1c s\u1ed1 t\u1eeb nh\u1ecf nh\u1ea5t \u0111\u1ebfn l\u1edbn nh\u1ea5t. Sau \u0111\u00f3 t\u00ecm s\u1ed1 \u1edf gi\u1eefa. V\u00ed d\u1ee5: gi\u00e1 tr\u1ecb gi\u1eefa cho b\u1ed9 s\u1ed1 1, 2, 3, 5, 6, 7, 9 l\u00e0 5, v\u00ec 5 \u1edf ngay gi\u1eefa.<\/p>\n\n\n\n B\u1ea1n nh\u1eadn \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 t\u01b0\u01a1ng t\u1ef1 v\u1edbi c\u00f4ng th\u1ee9c. C\u00f3 7 s\u1ed1 trong t\u1eadp h\u1ee3p n\u00ean n = 7:<\/p>\n\n\n\n {(7 + 1) \u00f7 2} s\u1ed1 th\u1ee9 t\u1ef1 = 8\u00f72 s\u1ed1 th\u1ee9 t\u1ef1 = 4 (s\u1ed1 th\u1ee9 t\u1ef1)<\/p>\n\n\n\n S\u1ed1 th\u1ee9 4 trong d\u00e3y 1, 2, 3, 5, 6, 7, 9 l\u00e0 5.<\/p>\n\n\n\n V\u00ed du, h\u00e3y t\u00ecm gi\u00e1 tr\u1ecb trung b\u00ecnh cho t\u1eadp h\u1ee3p g\u1ed3m 7 s\u1ed1 sau: 102, 56, 34, 99, 89, 101, 10.<\/p>\n\n\n\n
<\/figure>\n\n\n\nC\u00f4ng th\u1ee9c t\u00ednh trung v\u1ecb<\/strong><\/h2>\n\n\n\n
C\u00e1ch t\u00ecm trung v\u1ecb c\u1ee7a m\u1ed9t t\u1eadp h\u1ee3p s\u1ed1 l\u1ebb<\/strong><\/h2>\n\n\n\n