{"id":25590,"date":"2023-12-07T01:38:47","date_gmt":"2023-12-07T01:38:47","guid":{"rendered":"https:\/\/masterskills.org\/blog\/sai-so-chuan-standard-error-se-la-gi-yeu-cau-cho-sai-so-chuan.html"},"modified":"2023-12-22T10:38:37","modified_gmt":"2023-12-22T03:38:37","slug":"sai-so-chuan-standard-error-se-la-gi-yeu-cau-cho-sai-so-chuan","status":"publish","type":"post","link":"https:\/\/masterskills.org\/blog\/sai-so-chuan-standard-error-se-la-gi-yeu-cau-cho-sai-so-chuan.html","title":{"rendered":"Sai s\u1ed1 chu\u1ea9n (Standard Error – SE) l\u00e0 g\u00ec? Y\u00eau c\u1ea7u cho Sai s\u1ed1 chu\u1ea9n"},"content":{"rendered":"
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Hi\u0300nh minh ho\u0323a. Ngu\u00f4\u0300n: Osmosis.org <\/i><\/p>\n<\/div>\n<\/div>\n

Sai s\u1ed1 chu\u1ea9n<\/font><\/h2>\n

Kha\u0301i ni\u00ea\u0323m<\/b><\/p>\n

Sai s\u1ed1 chu\u1ea9n<\/b> trong ti\u00ea\u0301ng Anh la\u0300 Standard Error, <\/b>vi\u1ebft t\u1eaft l\u00e0\u00a0SE<\/b>.<\/p>\n

Sai s\u1ed1 chu\u1ea9n<\/b>\u00a0(SE)<\/b> l\u00e0 m\u1ed9t thu\u1eadt ng\u1eef th\u1ed1ng k\u00ea \u0111o l\u01b0\u1eddng \u0111\u1ed9 ch\u00ednh x\u00e1c m\u00e0 ph\u00e2n ph\u1ed1i m\u1eabu \u0111\u1ea1i di\u1ec7n cho m\u1ed9t t\u1ed5ng th\u1ec3 b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng\u00a0\u0111\u1ed9 l\u1ec7ch chu\u1ea9n. Trong th\u1ed1ng k\u00ea, n\u1ebfu m\u1ed9t gi\u00e1 tr\u1ecb trung b\u00ecnh m\u1eabu kh\u00e1c v\u1edbi gi\u00e1 tr\u1ecb trung b\u00ecnh th\u1ef1c t\u1ebf c\u1ee7a t\u1ed5ng th\u1ec3, s\u1ef1 ch\u00eanh l\u1ec7ch n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 sai s\u1ed1 chu\u1ea9n c\u1ee7a gi\u00e1 tr\u1ecb trung b\u00ecnh.<\/p>\n

Hi\u1ec3u h\u01a1n v\u1ec1 Sai s\u1ed1 chu\u1ea9n<\/font><\/h3>\n

Thu\u1eadt ng\u1eef “Sai s\u1ed1 chu\u1ea9n<\/b>” \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ch\u1ec9 \u0111\u1ed9 l\u1ec7ch chu\u1ea9n c\u1ee7a c\u00e1c th\u1ed1ng k\u00ea m\u1eabu kh\u00e1c nhau, ch\u1eb3ng h\u1ea1n nh\u01b0 gi\u00e1 tr\u1ecb trung b\u00ecnh ho\u1eb7c trung v\u1ecb. V\u00ed d\u1ee5: “sai s\u1ed1 chu\u1ea9n c\u1ee7a gi\u00e1 tr\u1ecb trung b\u00ecnh” \u0111\u1ec1 c\u1eadp \u0111\u1ebfn \u0111\u1ed9 l\u1ec7ch chu\u1ea9n c\u1ee7a ph\u00e2n ph\u1ed1i trung b\u00ecnh c\u1ee7a m\u1eabu \u0111\u01b0\u1ee3c l\u1ea5y t\u1eeb t\u1ed5ng th\u1ec3. Sai s\u1ed1 chu\u1ea9n c\u00e0ng nh\u1ecf, m\u1eabu \u0111\u00f3 s\u1ebd c\u00e0ng \u0111\u1ea1i di\u1ec7n cho t\u1ed5ng th\u1ec3.<\/p>\n

M\u1ed1i quan h\u1ec7 gi\u1eefa sai s\u1ed1 chu\u1ea9n v\u00e0 \u0111\u1ed9 l\u1ec7ch chu\u1ea9n l\u00e0 nh\u01b0 sau, \u0111\u1ed1i v\u1edbi m\u1ed9t c\u1ee1 m\u1eabu nh\u1ea5t \u0111\u1ecbnh, sai s\u1ed1 chu\u1ea9n b\u1eb1ng \u0111\u1ed9 l\u1ec7ch chu\u1ea9n chia cho c\u0103n b\u1eadc hai c\u1ee7a k\u00edch c\u1ee1 m\u1eabu. Sai s\u1ed1 chu\u1ea9n t\u1ec9 l\u1ec7 ngh\u1ecbch v\u1edbi k\u00edch th\u01b0\u1edbc m\u1eabu: c\u1ee1 m\u1eabu c\u00e0ng l\u1edbn, sai s\u1ed1 chu\u1ea9n c\u00e0ng nh\u1ecf v\u00ec th\u1ed1ng k\u00ea s\u1ebd g\u1ea7n h\u01a1n v\u1edbi gi\u00e1 tr\u1ecb th\u1ef1c t\u1ebf.<\/p>\n

C\u00e1c sai s\u1ed1 chu\u1ea9n <\/b>\u0111\u01b0\u1ee3c coi l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a th\u1ed1ng k\u00ea m\u00f4 t\u1ea3. N\u00f3 \u0111\u1ea1i di\u1ec7n cho \u0111\u1ed9 l\u1ec7ch chu\u1ea9n c\u1ee7a gi\u00e1 tr\u1ecb trung b\u00ecnh trong t\u1eadp d\u1eef li\u1ec7u. N\u00f3 ph\u1ee5c v\u1ee5 nh\u01b0 m\u1ed9t th\u01b0\u1edbc \u0111o bi\u1ebfn \u0111\u1ed9ng cho c\u00e1c bi\u1ebfn ng\u1eabu nhi\u00ean hay \u0111o l\u01b0\u1eddng \u0111\u1ed9 ph\u00e2n t\u00e1n. \u0110\u1ed9 ph\u00e2n t\u00e1n c\u00e0ng nh\u1ecf, d\u1eef li\u1ec7u c\u00e0ng ch\u00ednh x\u00e1c.<\/p>\n

Sai s\u1ed1 chu\u1ea9n v\u00e0 \u0111\u1ed9 l\u1ec7ch chu\u1ea9n l\u00e0 c\u00e1c bi\u1ec7n ph\u00e1p \u0111o l\u01b0\u1eddng bi\u1ebfn \u0111\u1ed9ng, trong khi c\u00e1c bi\u1ec7n ph\u00e1p \u0111o l\u01b0\u1eddng h\u01b0\u1edbng v\u1ec1 trung t\u00e2m l\u00e0 gi\u00e1 tr\u1ecb trung b\u00ecnh, trung v\u1ecb, v.v.<\/p>\n

Y\u00eau c\u1ea7u cho\u00a0Sai s\u1ed1 chu\u1ea9n<\/font><\/h3>\n

Khi l\u1ea5y m\u1eabu t\u1eeb m\u1ed9t t\u1ed5ng th\u1ec3 th\u00ec gi\u00e1 tr\u1ecb trung b\u00ecnh th\u01b0\u1eddng \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n tr\u01b0\u1edbc ti\u00ean. Sai s\u1ed1 chu\u1ea9n<\/b> cho bi\u1ebft nh\u1eefng thay \u0111\u1ed5i c\u1ee7a gi\u00e1 tr\u1ecb trung b\u00ecnh \u0111\u00e3 \u0111\u01b0\u1ee3c t\u00ednh c\u1ee7a t\u1ed5ng th\u1ec3 v\u1edbi gi\u00e1 tr\u1ecb th\u1ef1c t\u1ebf \u0111\u00e3 bi\u1ebft ho\u1eb7c \u0111\u01b0\u1ee3c ch\u1ea5p nh\u1eadn l\u00e0 ch\u00ednh x\u00e1c. Sai s\u1ed1 chu\u1ea9n b\u00f9 l\u1ea1i cho s\u1ef1 thi\u1ebfu ch\u00ednh x\u00e1c khi thu th\u1eadp m\u1eabu ng\u1eabu nhi\u00ean.<\/p>\n

Trong tr\u01b0\u1eddng h\u1ee3p thu th\u1eadp nhi\u1ec1u m\u1eabu, gi\u00e1 tr\u1ecb trung b\u00ecnh c\u1ee7a m\u1eabu n\u00e0y c\u00f3 th\u1ec3 thay \u0111\u1ed5i \u0111\u00f4i ch\u00fat so v\u1edbi c\u00e1c m\u1eabu kh\u00e1c, t\u1ea1o ra s\u1ef1 ch\u00eanh l\u1ec7ch gi\u1eefa c\u00e1c bi\u1ebfn. S\u1ef1 ph\u00e2n t\u00e1n n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111o l\u00e0 sai s\u1ed1 chu\u1ea9n, hay s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa c\u00e1c gi\u00e1 tr\u1ecb trung b\u00ecnh trong c\u00e1c t\u1eadp d\u1eef li\u1ec7u.<\/p>\n

M\u1eabu c\u00f3 k\u00edch th\u01b0\u1edbc c\u00e0ng l\u1edbn sai s\u1ed1 chu\u1ea9n c\u00e0ng nh\u1ecf. Khi sai s\u1ed1 chu\u1ea9n nh\u1ecf, gi\u00e1 tr\u1ecb trung b\u00ecnh m\u1eabu \u0111\u01b0\u1ee3c cho l\u00e0 \u0111\u1ea1i di\u1ec7n nhi\u1ec1u h\u01a1n cho gi\u00e1 tr\u1ecb trung b\u00ecnh t\u1ed5ng th\u1ec3. Trong tr\u01b0\u1eddng h\u1ee3p sai s\u1ed1 chu\u1ea9n l\u1edbn, d\u1eef li\u1ec7u c\u00f3 th\u1ec3 c\u00f3 m\u1ed9t s\u1ed1 \u0111i\u1ec3m d\u1eef li\u1ec7u ngo\u1ea1i lai \u0111\u00e1ng ch\u00fa \u00fd.<\/p>\n

\u0110\u1ed9 l\u1ec7ch chu\u1ea9n \u0111\u1ea1i di\u1ec7n cho s\u1ef1 ph\u00e2n t\u00e1n c\u1ee7a t\u1eebng \u0111i\u1ec3m d\u1eef li\u1ec7u. \u0110\u1ed9 l\u1ec7ch chu\u1ea9n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh t\u00ednh h\u1ee3p l\u1ec7 c\u1ee7a d\u1eef li\u1ec7u d\u1ef1a tr\u00ean s\u1ed1 l\u01b0\u1ee3ng \u0111i\u1ec3m d\u1eef li\u1ec7u c\u00f3 \u0111\u01b0\u1ee3c \u1edf m\u1ed7i m\u1ee9c \u0111\u1ed9 l\u1ec7ch chu\u1ea9n. Sai s\u1ed1 chu\u1ea9n<\/b> m\u1eb7t kh\u00e1c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a m\u1eabu ho\u1eb7c \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a nhi\u1ec1u m\u1eabu b\u1eb1ng c\u00e1ch ph\u00e2n t\u00edch \u0111\u1ed9 l\u1ec7ch gi\u1eefa c\u00e1c gi\u00e1 tr\u1ecb trung b\u00ecnh.<\/p>\n

Ca\u0301c y\u0301 chi\u0301nh<\/font><\/h3>\n

– Sai s\u1ed1 chu\u1ea9n<\/b> l\u00e0 \u0111\u1ed9 l\u1ec7ch chu\u1ea9n g\u1ea7n \u0111\u00fang c\u1ee7a t\u1ed5ng th\u1ec3 m\u1eabu th\u1ed1ng k\u00ea.<\/p>\n

– Sai s\u1ed1 chu\u1ea9n bao h\u00e0m kho\u1ea3ng ch\u00eanh l\u1ec7ch gi\u1eefa gi\u00e1 tr\u1ecb trung b\u00ecnh t\u00ednh \u0111\u01b0\u1ee3c c\u1ee7a t\u1ed5ng th\u1ec3 v\u00e0 sai s\u1ed1 \u0111\u01b0\u1ee3c \u0111\u00e3 bi\u1ebft ho\u1eb7c \u0111\u01b0\u1ee3c ch\u1ea5p nh\u1eadn l\u00e0 ch\u00ednh x\u00e1c.<\/p>\n

– C\u00e0ng s\u1eed d\u1ee5ng nhi\u1ec1u \u0111i\u1ec3m d\u1eef li\u1ec7u khi t\u00ednh to\u00e1n gi\u00e1 tr\u1ecb trung b\u00ecnh, sai s\u1ed1 chu\u1ea9n c\u00e0ng nh\u1ecf, hay m\u1eabu \u0111\u1ea1i di\u1ec7n cho t\u1ed5ng th\u1ec3 c\u00e0ng nhi\u1ec1u.<\/p>\n

(Theo Investopedia<\/i>)<\/p>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

\n Sai s\u1ed1 chu\u1ea9n (ti\u00ea\u0301ng Anh: Standard Error, vi\u1ebft t\u1eaft: SE) l\u00e0 \u0111\u1ed9 l\u1ec7ch chu\u1ea9n g\u1ea7n \u0111\u00fang c\u1ee7a m\u1ed9t m\u1eabu th\u1ed1ng k\u00ea t\u1eeb t\u1ed5ng th\u1ec3. C\u00e1c sai s\u1ed1 chu\u1ea9n \u0111\u01b0\u1ee3c coi l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a th\u1ed1ng k\u00ea m\u00f4 t\u1ea3.\n <\/div>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[414],"tags":[],"_links":{"self":[{"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/posts\/25590"}],"collection":[{"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/comments?post=25590"}],"version-history":[{"count":0,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/posts\/25590\/revisions"}],"wp:attachment":[{"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/media?parent=25590"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/categories?post=25590"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/tags?post=25590"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}