{"id":3058,"date":"2026-10-12T08:00:00","date_gmt":"2026-10-12T01:00:00","guid":{"rendered":"https:\/\/dykhoa.com\/blog\/?post_type=thuat_ngu&p=3057"},"modified":"2026-10-12T08:00:00","modified_gmt":"2026-10-12T01:00:00","slug":"gia-thuyet-khong-null-hypothesis","status":"publish","type":"thuat_ngu","link":"https:\/\/dykhoa.com\/blog\/thuat-ngu\/gia-thuyet-khong-null-hypothesis\/","title":{"rendered":"Gi\u1ea3 thuy\u1ebft kh\u00f4ng (null hypothesis) l\u00e0 g\u00ec?"},"content":{"rendered":"

\u0110\u01b0\u1ee3c \u0111\u1eb7t n\u1ec1n m\u00f3ng b\u1edfi nh\u00e0 th\u1ed1ng k\u00ea h\u1ecdc Ronald Fisher (1935), to\u00e0n b\u1ed9 b\u00e0i ki\u1ec3m \u0111\u1ecbnh th\u1ed1ng k\u00ea c\u1ed5 \u0111i\u1ec3n \u0111\u1ec1u b\u1eaft \u0111\u1ea7u b\u1eb1ng vi\u1ec7c c\u1ed1 g\u1eafng b\u00e1c b\u1ecf gi\u1ea3 thuy\u1ebft kh\u00f4ng (H0). Tham kh\u1ea3o b\u00e0i P-hacking v\u00e0 \u00fd ngh\u0129a th\u1ed1ng k\u00ea<\/a>.<\/p>\n

Nguy\u00ean t\u1eafc suy \u0111o\u00e1n v\u00f4 t\u1ed9i<\/h2>\n

T\u01b0\u01a1ng t\u1ef1 nh\u01b0 t\u00f2a \u00e1n: m\u1ed9t lo\u1ea1i thu\u1ed1c m\u1edbi \u0111\u01b0\u1ee3c xem l\u00e0 ‘v\u00f4 hi\u1ec7u’ cho \u0111\u1ebfn khi thu th\u1eadp \u0111\u1ee7 b\u1eb1ng ch\u1ee9ng th\u1ef1c nghi\u1ec7m \u0111\u1ec3 b\u00e1c b\u1ecf gi\u1ea3 thuy\u1ebft H0 \u0111\u00f3 v\u1edbi x\u00e1c su\u1ea5t ng\u1eabu nhi\u00ean c\u1ef1c th\u1ea5p.<\/p>\n

B\u00e1c b\u1ecf H0 kh\u00f4ng c\u00f3 ngh\u0129a l\u00e0 ch\u1ee9ng minh tuy\u1ec7t \u0111\u1ed1i<\/h2>\n

B\u00e1c b\u1ecf gi\u1ea3 thuy\u1ebft kh\u00f4ng ch\u1ec9 ch\u1ee9ng minh r\u1eb1ng d\u1eef li\u1ec7u quan s\u00e1t \u0111\u01b0\u1ee3c r\u1ea5t kh\u00f3 x\u1ea3y ra do t\u00ecnh c\u1edd, ch\u1ee9 kh\u00f4ng ch\u1ee9ng minh gi\u1ea3 thuy\u1ebft nghi\u00ean c\u1ee9u \u0111\u00fang 100%.<\/p>\n","protected":false},"excerpt":{"rendered":"

Gi\u1ea3 thuy\u1ebft kh\u00f4ng l\u00e0 gi\u1ea3 \u0111\u1ecbnh m\u1eb7c \u0111\u1ecbnh trong ki\u1ec3m \u0111\u1ecbnh th\u1ed1ng k\u00ea cho r\u1eb1ng kh\u00f4ng c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t, kh\u00f4ng c\u00f3 m\u1ed1i li\u00ean h\u1ec7 ho\u1eb7c kh\u00f4ng c\u00f3 hi\u1ec7u qu\u1ea3 th\u1ef1c s\u1ef1 gi\u1eefa c\u00e1c bi\u1ebfn s\u1ed1 \u0111ang \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u.<\/p>\n","protected":false},"author":1,"featured_media":0,"template":"","nhom_thuat_ngu":[476],"class_list":["post-3058","thuat_ngu","type-thuat_ngu","status-publish","hentry","nhom_thuat_ngu-nghien-cuu-bang-chung"],"yoast_head":"\nGi\u1ea3 thuy\u1ebft kh\u00f4ng (null hypothesis) l\u00e0 g\u00ec? - Dy Khoa Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/dykhoa.com\/blog\/thuat-ngu\/gia-thuyet-khong-null-hypothesis\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Gi\u1ea3 thuy\u1ebft kh\u00f4ng (null hypothesis) l\u00e0 g\u00ec? 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