{"id":36445,"date":"2025-11-23T18:20:02","date_gmt":"2025-11-23T18:20:02","guid":{"rendered":"https:\/\/onlineexammaker.com\/kb\/?p=36445"},"modified":"2025-12-09T15:59:57","modified_gmt":"2025-12-09T15:59:57","slug":"15-statistics-quiz-questions-and-answers-12","status":"publish","type":"post","link":"https:\/\/onlineexammaker.com\/kb\/vi\/15-statistics-quiz-questions-and-answers-12\/","title":{"rendered":"2026 | 15 c\u00e2u h\u1ecfi v\u00e0 \u0111\u00e1p \u00e1n tr\u1eafc nghi\u1ec7m th\u1ed1ng k\u00ea"},"content":{"rendered":"<p>Th\u1ed1ng k\u00ea l\u00e0 m\u1ed9t l\u0129nh v\u1ef1c khoa h\u1ecdc v\u00e0 k\u1ef9 thu\u1eadt li\u00ean quan \u0111\u1ebfn vi\u1ec7c thu th\u1eadp, ph\u00e2n t\u00edch, hi\u1ec3u v\u00e0 t\u1ed5ng h\u1ee3p d\u1eef li\u1ec7u \u0111\u1ec3 h\u1ed7 tr\u1ee3 qu\u00e1 tr\u00ecnh ra quy\u1ebft \u0111\u1ecbnh. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t c\u00e1i nh\u00ecn t\u1ed5ng quan v\u1ec1 th\u1ed1ng k\u00ea:<\/p>\n<p>1. M\u1ee5c ti\u00eau c\u1ee7a Th\u1ed1ng k\u00ea: M\u1ee5c ti\u00eau ch\u00ednh c\u1ee7a th\u1ed1ng k\u00ea l\u00e0 cung c\u1ea5p c\u00e1i nh\u00ecn to\u00e0n di\u1ec7n v\u1ec1 d\u1eef li\u1ec7u v\u00e0 gi\u00fap hi\u1ec3u r\u00f5 v\u1ec1 m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c bi\u1ebfn s\u1ed1. Th\u1ed1ng k\u00ea \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u00f3m t\u1eaft, m\u00f4 t\u1ea3 v\u00e0 di\u1ec5n \u0111\u1ea1t d\u1eef li\u1ec7u m\u1ed9t c\u00e1ch s\u1ed1 h\u1ecdc, \u0111\u1ed3 h\u1ecda v\u00e0 ng\u1eef ngh\u0129a.<\/p>\n<p>2. Ph\u00e2n lo\u1ea1i Th\u1ed1ng k\u00ea: Th\u1ed1ng k\u00ea \u0111\u01b0\u1ee3c ph\u00e2n th\u00e0nh hai lo\u1ea1i ch\u00ednh: th\u1ed1ng k\u00ea m\u00f4 t\u1ea3 v\u00e0 th\u1ed1ng k\u00ea suy lu\u1eadn. Th\u1ed1ng k\u00ea m\u00f4 t\u1ea3 d\u00f9ng \u0111\u1ec3 m\u00f4 t\u1ea3 v\u00e0 t\u00f3m t\u1eaft d\u1eef li\u1ec7u th\u00f4ng qua c\u00e1c ph\u01b0\u01a1ng ph\u00e1p nh\u01b0 trung b\u00ecnh, ph\u01b0\u01a1ng sai, v\u00e0 bi\u1ec3u \u0111\u1ed3. Trong khi \u0111\u00f3, th\u1ed1ng k\u00ea suy lu\u1eadn s\u1eed d\u1ee5ng d\u1eef li\u1ec7u m\u1eabu \u0111\u1ec3 r\u00fat ra nh\u1eefng k\u1ebft lu\u1eadn ho\u1eb7c d\u1ef1 \u0111o\u00e1n v\u1ec1 qu\u1ea7n th\u1ec3.<\/p>\n<p>3. C\u00f4ng c\u1ee5 Th\u1ed1ng k\u00ea: C\u00f3 nhi\u1ec1u c\u00f4ng c\u1ee5 v\u00e0 k\u1ef9 thu\u1eadt th\u1ed1ng k\u00ea \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ph\u00e2n t\u00edch d\u1eef li\u1ec7u, bao g\u1ed3m ph\u00e2n t\u00edch t\u01b0\u01a1ng quan, ki\u1ec3m \u0111\u1ecbnh gi\u1ea3 thuy\u1ebft, h\u1ed3i quy, v\u00e0 nhi\u1ec1u ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c. C\u00e1c c\u00f4ng c\u1ee5 n\u00e0y gi\u00fap x\u00e1c \u0111\u1ecbnh m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c bi\u1ebfn s\u1ed1 v\u00e0 \u0111\u01b0a ra d\u1ef1 \u0111o\u00e1n d\u1ef1a tr\u00ean d\u1eef li\u1ec7u.<\/p>\n<p>4. \u1ee8ng d\u1ee5ng c\u1ee7a Th\u1ed1ng k\u00ea: Th\u1ed1ng k\u00ea \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c, bao g\u1ed3m kinh t\u1ebf, y t\u1ebf, khoa h\u1ecdc x\u00e3 h\u1ed9i, c\u00f4ng ngh\u1ec7 th\u00f4ng tin, v\u00e0 nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c. C\u00e1c chuy\u00ean gia th\u1ed1ng k\u00ea c\u00f3 vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c ph\u00e2n t\u00edch d\u1eef li\u1ec7u v\u00e0 cung c\u1ea5p th\u00f4ng tin quan tr\u1ecdng \u0111\u1ec3 h\u1ed7 tr\u1ee3 quy\u1ebft \u0111\u1ecbnh trong c\u00e1c l\u0129nh v\u1ef1c n\u00e0y.<\/p>\n<p>5. T\u1ea7m quan tr\u1ecdng c\u1ee7a Th\u1ed1ng k\u00ea: Th\u1ed1ng k\u00ea \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c l\u00e0m s\u00e1ng t\u1ecf c\u00e1c hi\u1ec7n t\u01b0\u1ee3ng ph\u1ee9c t\u1ea1p, gi\u00fap \u0111\u01b0a ra c\u00e1c quy\u1ebft \u0111\u1ecbnh d\u1ef1a tr\u00ean d\u1eef li\u1ec7u ch\u1ee9 kh\u00f4ng ph\u1ea3i d\u1ef1a v\u00e0o c\u1ea3m t\u00ednh. Vi\u1ec7c hi\u1ec3u v\u00e0 \u00e1p d\u1ee5ng c\u00e1c nguy\u00ean t\u1eafc th\u1ed1ng k\u00ea gi\u00fap t\u1ed1i \u01b0u h\u00f3a qu\u00e1 tr\u00ecnh ra quy\u1ebft \u0111\u1ecbnh v\u00e0 \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 hi\u1ec7u qu\u1ea3.<\/p>\n<p>Th\u1ed1ng k\u00ea l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 quan tr\u1ecdng \u0111\u1ec3 gi\u1ea3i quy\u1ebft c\u00e1c v\u1ea5n \u0111\u1ec1 ph\u1ee9c t\u1ea1p v\u00e0 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh th\u00f4ng minh trong nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c nhau. \u0110i\u1ec1u n\u00e0y l\u00e0m cho n\u00f3 tr\u1edf th\u00e0nh m\u1ed9t ph\u1ea7n kh\u00f4ng th\u1ec3 thi\u1ebfu trong qu\u00e1 tr\u00ecnh nghi\u00ean c\u1ee9u v\u00e0 qu\u1ea3n l\u00fd.<\/p>\n<h3> \u0110\u1ec1 c\u01b0\u01a1ng b\u00e0i vi\u1ebft<\/h3>\n<ul class=\"article_list\">\n<li><a href=\"#a\">Ph\u1ea7n 1: C\u00f4ng c\u1ee5 t\u1ea1o b\u00e0i ki\u1ec3m tra AI OnlineExamMaker &#8211; C\u00e1ch d\u1ec5 nh\u1ea5t \u0111\u1ec3 t\u1ea1o b\u00e0i ki\u1ec3m tra tr\u1ef1c tuy\u1ebfn<\/a><\/li>\n<li><a href=\"#1\">Ph\u1ea7n 2: 15 c\u00e2u h\u1ecfi tr\u1eafc nghi\u1ec7m th\u1ed1ng k\u00ea<\/a><\/li>\n<li> <a href=\"#2\">Ph\u1ea7n 3: T\u1ef1 \u0111\u1ed9ng t\u1ea1o c\u00e2u h\u1ecfi tr\u1eafc nghi\u1ec7m b\u1eb1ng AI Quiz Generatoro<\/a><\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/onlineexammaker.com\/kb\/wp-content\/uploads\/2023\/08\/statistics-quiz.webp\" alt=\"\" \/><\/p>\n<h3 id=\"a\">Ph\u1ea7n 1: C\u00f4ng c\u1ee5 t\u1ea1o b\u00e0i ki\u1ec3m tra AI OnlineExamMaker &#8211; C\u00e1ch d\u1ec5 nh\u1ea5t \u0111\u1ec3 t\u1ea1o b\u00e0i ki\u1ec3m tra tr\u1ef1c tuy\u1ebfn<\/h3>\n<p>B\u1ea1n \u0111ang t\u00ecm ki\u1ebfm m\u1ed9t \u0111\u00e1nh gi\u00e1 tr\u1ef1c tuy\u1ebfn \u0111\u1ec3 ki\u1ec3m tra c\u00e1c k\u1ef9 n\u0103ng th\u1ed1ng k\u00ea c\u1ee7a ng\u01b0\u1eddi h\u1ecdc c\u1ee7a b\u1ea1n? OnlineExmaker s\u1eed d\u1ee5ng tr\u00ed th\u00f4ng minh nh\u00e2n t\u1ea1o \u0111\u1ec3 gi\u00fap c\u00e1c nh\u00e0 t\u1ed5 ch\u1ee9c \u0111\u1ed1 \u0111\u1ec3 t\u1ea1o, qu\u1ea3n l\u00fd v\u00e0 ph\u00e2n t\u00edch c\u00e1c b\u00e0i ki\u1ec3m tra ho\u1eb7c ki\u1ec3m tra t\u1ef1 \u0111\u1ed9ng. Ngo\u00e0i c\u00e1c t\u00ednh n\u0103ng c\u1ee7a AI, c\u00e1c t\u00ednh n\u0103ng b\u1ea3o m\u1eadt n\u00e2ng cao tr\u1ef1c tuy\u1ebfnExmaker nh\u01b0 tr\u00ecnh duy\u1ec7t kh\u00f3a to\u00e0n m\u00e0n h\u00ecnh, gi\u00e1m s\u00e1t webcam tr\u1ef1c tuy\u1ebfn v\u00e0 nh\u1eadn d\u1ea1ng ID Face.<\/p>\n<p><strong> Tham quan s\u1ea3n ph\u1ea9m c\u1ee7a OnlineExmaker: <\/strong><br \/>\n\u25cf Bao g\u1ed3m tr\u00ecnh duy\u1ec7t ki\u1ec3m tra an to\u00e0n (ch\u1ebf \u0111\u1ed9 kh\u00f3a), ghi web v\u00e0 ghi m\u00e0n h\u00ecnh, gi\u00e1m s\u00e1t tr\u1ef1c ti\u1ebfp v\u00e0 gi\u00e1m s\u00e1t tr\u00f2 chuy\u1ec7n \u0111\u1ec3 ng\u0103n ch\u1eb7n gian l\u1eadn.<br \/>\n\u25cf H\u1ecdc sinh l\u1edbp AI \u0111\u1ec3 ph\u00e2n lo\u1ea1i hi\u1ec7u qu\u1ea3 c\u00e1c c\u00e2u \u0111\u1ed1 v\u00e0 b\u00e0i t\u1eadp, cung c\u1ea5p nh\u1eadn x\u00e9t n\u1ed9i tuy\u1ebfn, ghi \u0111i\u1ec3m t\u1ef1 \u0111\u1ed9ng v\u00e0 &#8220;\u0111i\u1ec3m fudge&#8221; \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh th\u1ee7 c\u00f4ng.<br \/>\n\u25cf Nh\u00fang c\u00e1c c\u00e2u h\u1ecfi tr\u00ean c\u00e1c trang web, blog ho\u1eb7c chia s\u1ebb qua email, ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n th\u00f4ng x\u00e3 h\u1ed9i (Facebook, Twitter) ho\u1eb7c li\u00ean k\u1ebft tr\u1ef1c ti\u1ebfp.<br \/>\n\u25cf X\u1eed l\u00fd th\u1eed nghi\u1ec7m quy m\u00f4 l\u1edbn (h\u00e0ng ng\u00e0n b\u00e0i ki\u1ec3m tra\/h\u1ecdc k\u1ef3) m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ee5 thu\u1ed9c Internet, \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 b\u1edfi c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng \u0111\u00e1m m\u00e2y.<\/p>\n<div class=\"embed_video_blog\">\n<div class=\"embed-responsive embed-responsive-16by9\" style=\"margin-bottom:16px;\">\n <iframe class=\"embed-responsive-item\" src=\"https:\/\/www.youtube.com\/embed\/bv7AAAyFOo4\"><\/iframe>\n<\/div>\n<\/div>\n<div class=\"getstarted-container\">\n<p style=\"margin-bottom: 13px;\">T\u1ea1o b\u00e0i ki\u1ec3m tra\/b\u00e0i ki\u1ec3m tra ti\u1ebfp theo c\u1ee7a b\u1ea1n v\u1edbi OnlineExamMaker<\/p>\n<div class=\"blog_double_btn clearfix\">\n<div class=\"col-sm-6  col-xs-12\">\n<div class=\"p-style-a\"><a class=\"get_started_btn\" href=\"https:\/\/onlineexammaker.com\/sign-up.html?refer=blog_btn\"> B\u1eaft \u0111\u1ea7u mi\u1ec5n ph\u00ed<\/a><\/div>\n<div class=\"p-style-b\">SAAS, mi\u1ec5n ph\u00ed m\u00e3i m\u00e3i<\/div>\n<\/div>\n<div class=\"col-sm-6  col-xs-12\">\n<div class=\"p-style-a\"><a class=\"get_started_btn\" href=\"https:\/\/onlineexammaker.com\/lan.html?refer=blog_btn\">On-Premise: T\u1ea3i xu\u1ed1ng<\/a><\/div>\n<div class=\"p-style-b\">Quy\u1ec1n s\u1edf h\u1eefu d\u1eef li\u1ec7u 100%<\/div>\n<\/div>\n<\/div>\n<\/div>\n<h3 id=\"1\"> Ph\u1ea7n 2: 15 c\u00e2u h\u1ecfi tr\u1eafc nghi\u1ec7m th\u1ed1ng k\u00ea<\/h3>\n<p><button type=\"button\" id=\"copyquestionsBtn\" onClick=\"myFunction()\">Sao ch\u00e9p c\u00e2u h\u1ecfi \u0111\u1ed1<\/button><\/p>\n<div id=\"copy_questions\">\n<p>1. C\u00e2u h\u1ecfi: Th\u1ed1ng k\u00ea m\u00f4 t\u1ea3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u00e0m g\u00ec?<br \/>\n   a) R\u00fat ra k\u1ebft lu\u1eadn t\u1eeb d\u1eef li\u1ec7u m\u1eabu<br \/>\n   b) T\u00f3m t\u1eaft v\u00e0 m\u00f4 t\u1ea3 d\u1eef li\u1ec7u<br \/>\n   c) Ki\u1ec3m \u0111\u1ecbnh gi\u1ea3 thuy\u1ebft<br \/>\n   d) D\u1ef1 \u0111o\u00e1n xu h\u01b0\u1edbng t\u01b0\u01a1ng lai<\/p>\n<p>   \u0110\u00e1p \u00e1n: b) T\u00f3m t\u1eaft v\u00e0 m\u00f4 t\u1ea3 d\u1eef li\u1ec7u<\/p>\n<p>2. C\u00e2u h\u1ecfi: Th\u1ed1ng k\u00ea suy lu\u1eadn s\u1eed d\u1ee5ng d\u1eef li\u1ec7u g\u00ec?<br \/>\n   a) D\u1eef li\u1ec7u th\u00f4<br \/>\n   b) D\u1eef li\u1ec7u l\u1edbn<br \/>\n   c) D\u1eef li\u1ec7u m\u1eabu<br \/>\n   d) D\u1eef li\u1ec7u \u0111\u1ecbnh t\u00ednh<\/p>\n<p>   \u0110\u00e1p \u00e1n: c) D\u1eef li\u1ec7u m\u1eabu<\/p>\n<p>3. C\u00e2u h\u1ecfi: Ph\u01b0\u01a1ng ph\u00e1p n\u00e0o \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o l\u01b0\u1eddng s\u1ef1 bi\u1ebfn \u0111\u1ed9ng c\u1ee7a d\u1eef li\u1ec7u?<br \/>\n   a) Trung b\u00ecnh<br \/>\n   b) Ph\u01b0\u01a1ng sai<br \/>\n   c) \u0110\u1ed9 l\u1ec7ch chu\u1ea9n<br \/>\n   d) Ph\u01b0\u01a1ng th\u1ee9c<\/p>\n<p>   \u0110\u00e1p \u00e1n: b) Ph\u01b0\u01a1ng sai<\/p>\n<p>4. C\u00e2u h\u1ecfi: \u0110\u00e2u l\u00e0 m\u1ed9t v\u00ed d\u1ee5 v\u1ec1 bi\u1ebfn s\u1ed1 li\u00ean t\u1ee5c?<br \/>\n   a) S\u1ed1 l\u01b0\u1ee3ng h\u1ecdc sinh trong m\u1ed9t l\u1edbp h\u1ecdc<br \/>\n   b) Lo\u1ea1i ph\u01b0\u01a1ng ti\u1ec7n m\u00e0 ng\u01b0\u1eddi d\u00f9ng s\u1eed d\u1ee5ng<br \/>\n   c) Nhi\u1ec7t \u0111\u1ed9 trong m\u1ed9t ng\u00e0y<br \/>\n   d) T\u00ecnh tr\u1ea1ng h\u00f4n nh\u00e2n c\u1ee7a ng\u01b0\u1eddi d\u00e2n<\/p>\n<p>   \u0110\u00e1p \u00e1n: c) Nhi\u1ec7t \u0111\u1ed9 trong m\u1ed9t ng\u00e0y<\/p>\n<p>5. C\u00e2u h\u1ecfi: Ph\u01b0\u01a1ng ph\u00e1p n\u00e0o \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 m\u1ed1i quan h\u1ec7 gi\u1eefa hai bi\u1ebfn s\u1ed1?<br \/>\n   a) Ki\u1ec3m \u0111\u1ecbnh gi\u1ea3 thuy\u1ebft<br \/>\n   b) Ph\u00e2n t\u00edch t\u01b0\u01a1ng quan<br \/>\n   c) Ph\u00e2n t\u00edch h\u1ed3i quy<br \/>\n   d) Ki\u1ec3m tra t-test<\/p>\n<p>   \u0110\u00e1p \u00e1n: b) Ph\u00e2n t\u00edch t\u01b0\u01a1ng quan<\/p>\n<p>6. C\u00e2u h\u1ecfi: Ph\u01b0\u01a1ng ph\u00e1p n\u00e0o \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 d\u1ef1 \u0111o\u00e1n gi\u00e1 tr\u1ecb c\u1ee7a m\u1ed9t bi\u1ebfn s\u1ed1 d\u1ef1a tr\u00ean bi\u1ebfn s\u1ed1 kh\u00e1c?<br \/>\n   a) Ki\u1ec3m \u0111\u1ecbnh gi\u1ea3 thuy\u1ebft<br \/>\n   b) Ph\u00e2n t\u00edch t\u01b0\u01a1ng quan<br \/>\n   c) Ph\u00e2n t\u00edch h\u1ed3i quy<br \/>\n   d) Ki\u1ec3m tra t-test<\/p>\n<p>   \u0110\u00e1p \u00e1n: c) Ph\u00e2n t\u00edch h\u1ed3i quy<\/p>\n<p>7. C\u00e2u h\u1ecfi: Ph\u01b0\u01a1ng ph\u00e1p n\u00e0o \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ki\u1ec3m tra s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa hai nh\u00f3m?<br \/>\n   a) Ph\u00e2n t\u00edch t\u01b0\u01a1ng quan<br \/>\n   b) Ki\u1ec3m tra t-test<br \/>\n   c) Ki\u1ec3m \u0111\u1ecbnh gi\u1ea3 thuy\u1ebft<br \/>\n   d) Ph\u00e2n t\u00edch h\u1ed3i quy<\/p>\n<p>   \u0110\u00e1p \u00e1n: b) Ki\u1ec3m tra t-test<\/p>\n<p>8. C\u00e2u h\u1ecfi: Ph\u01b0\u01a1ng ph\u00e1p n\u00e0o \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ki\u1ec3m tra s\u1ef1 kh\u1edbp gi\u1eefa ph\u00e2n ph\u1ed1i quan s\u00e1t v\u00e0 ph\u00e2n ph\u1ed1i l\u00fd thuy\u1ebft?<br \/>\n   a) Ph\u00e2n t\u00edch t\u01b0\u01a1ng quan<br \/>\n   b) Ki\u1ec3m \u0111\u1ecbnh gi\u1ea3 thuy\u1ebft<br \/>\n   c) Ki\u1ec3m tra t-test<br \/>\n   d) Ki\u1ec3m tra goodness-of-fit<\/p>\n<p>   \u0110\u00e1p \u00e1n: d) Ki\u1ec3m tra goodness-of-fit<\/p>\n<p>9. C\u00e2u h\u1ecfi: \u0110\u00e2u kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t lo\u1ea1i ph\u00e2n ph\u1ed1i x\u00e1c su\u1ea5t?<br \/>\n   a) Ph\u00e2n ph\u1ed1i chu\u1ea9n<br \/>\n   b) Ph\u00e2n ph\u1ed1i Bernoulli<br \/>\n   c) Ph\u00e2n ph\u1ed1i \u0111\u1ec1u<br \/>\n   d) Ph\u00e2n ph\u1ed1i m\u1eadt \u0111\u1ed9<\/p>\n<p>   \u0110\u00e1p \u00e1n: d) Ph\u00e2n ph\u1ed1i m\u1eadt \u0111\u1ed9<\/p>\n<p>10. C\u00e2u h\u1ecfi: Trong th\u1ed1ng k\u00ea, \u0111i\u1ec1u g\u00ec \u0111\u01b0\u1ee3c hi\u1ec3u b\u1eb1ng c\u00e1ch \u0111o l\u01b0\u1eddng m\u1ee9c \u0111\u1ed9 bi\u1ebfn thi\u00ean c\u1ee7a m\u1ed9t t\u1eadp h\u1ee3p d\u1eef li\u1ec7u?<br \/>\n    a) Ph\u01b0\u01a1ng sai<br \/>\n    b) \u0110\u1ed9 l\u1ec7ch chu\u1ea9n<br \/>\n    c) Trung b\u00ecnh<br \/>\n    d) \u0110\u1ed9 bi\u1ebfn \u0111\u1ed9ng<\/p>\n<p>    \u0110\u00e1p \u00e1n: a) Ph\u01b0\u01a1ng sai<\/p>\n<p>11. C\u00e2u h\u1ecfi: \u0110\u00e2u l\u00e0 m\u1ed9t bi\u1ebfn s\u1ed1 ph\u00e2n lo\u1ea1i?<br \/>\n    a) Chi\u1ec1u cao c\u1ee7a ng\u01b0\u1eddi d\u00e2n<br \/>\n    b) Tu\u1ed5i c\u1ee7a h\u1ecdc sinh<br \/>\n    c) Lo\u1ea1i h\u00ecnh doanh nghi\u1ec7p<br \/>\n    d) Th\u1eddi gian \u0111\u1ebfn tr\u01b0\u1eddng<\/p>\n<p>    \u0110\u00e1p \u00e1n: c) Lo\u1ea1i h\u00ecnh doanh nghi\u1ec7p<\/p>\n<p>12. C\u00e2u h\u1ecfi: Th\u1ed1ng k\u00ea m\u00f4 t\u1ea3 kh\u00f4ng bao g\u1ed3m ph\u01b0\u01a1ng ph\u00e1p n\u00e0o sau \u0111\u00e2y?<br \/>\n    a) Bi\u1ec3u \u0111\u1ed3<br \/>\n    b) Ph\u00e2n t\u00edch t\u01b0\u01a1ng quan<br \/>\n    c) Trung b\u00ecnh<br \/>\n    d) Ph\u00e2n v\u1ecb<\/p>\n<p>    \u0110\u00e1p \u00e1n: b) Ph\u00e2n t\u00edch t\u01b0\u01a1ng quan<\/p>\n<p>13. C\u00e2u h\u1ecfi: Ph\u01b0\u01a1ng ph\u00e1p n\u00e0o \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 so s\u00e1nh trung b\u00ecnh c\u1ee7a hai nh\u00f3m?<br \/>\n    a) Ki\u1ec3m tra t-test<br \/>\n    b) Ph\u00e2n t\u00edch h\u1ed3i quy<br \/>\n    c) Ph\u00e2n t\u00edch t\u01b0\u01a1ng quan<br \/>\n    d) Ki\u1ec3m \u0111\u1ecbnh gi\u1ea3 thuy\u1ebft<\/p>\n<p>    \u0110\u00e1p \u00e1n: a) Ki\u1ec3m tra t-test<\/p>\n<p>14. C\u00e2u h\u1ecfi: Bi\u1ebfn s\u1ed1 \u0111o l\u01b0\u1eddng \u0111\u01b0\u1ee3c ph\u00e2nlo\u1ea1i th\u00e0nh hai lo\u1ea1i ch\u00ednh l\u00e0 g\u00ec?<br \/>\n    a) Bi\u1ebfn s\u1ed1 r\u1eddi r\u1ea1c<br \/>\n    b) Bi\u1ebfn s\u1ed1 li\u00ean t\u1ee5c<br \/>\n    c) Bi\u1ebfn s\u1ed1 ph\u00e2n lo\u1ea1i<br \/>\n    d) Bi\u1ebfn s\u1ed1 d\u1ecbch chuy\u1ec3n<\/p>\n<p>    \u0110\u00e1p \u00e1n: b) Bi\u1ebfn s\u1ed1 li\u00ean t\u1ee5c<\/p>\n<p>15. C\u00e2u h\u1ecfi: \u0110\u00e2u l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p th\u1ed1ng k\u00ea suy lu\u1eadn?<br \/>\n    a) Ph\u00e2n t\u00edch t\u01b0\u01a1ng quan<br \/>\n    b) Ph\u00e2n t\u00edch h\u1ed3i quy<br \/>\n    c) Ki\u1ec3m \u0111\u1ecbnh gi\u1ea3 thuy\u1ebft<br \/>\n    d) Th\u1ed1ng k\u00ea m\u00f4 t\u1ea3<\/p>\n<p>    \u0110\u00e1p \u00e1n: c) Ki\u1ec3m \u0111\u1ecbnh gi\u1ea3 thuy\u1ebft<\/p>\n<\/div>\n<p><button type=\"button\" id=\"copyquestionsBtn\" onClick=\"myFunction()\">Sao ch\u00e9p c\u00e2u h\u1ecfi \u0111\u1ed1<\/button><\/p>\n<h3 id=\"2\">Ph\u1ea7n 3: T\u1ef1 \u0111\u1ed9ng t\u1ea1o c\u00e2u h\u1ecfi tr\u1eafc nghi\u1ec7m b\u1eb1ng AI Quiz Generator<\/h3>\n<div class=\"embed_video_blog\">\n<div class=\"embed-responsive embed-responsive-16by9\" style=\"margin-bottom:16px;\">\n <iframe class=\"embed-responsive-item\" src=\"https:\/\/www.youtube.com\/embed\/zlqho9igH2Y\"><\/iframe>\n<\/div>\n<\/div>\n<div class=\"getstarted-container\">\n<p style=\"margin-bottom: 13px;\">T\u1ef1 \u0111\u1ed9ng t\u1ea1o c\u00e2u h\u1ecfi b\u1eb1ng AI<\/p>\n<div class=\"blog_double_btn clearfix\">\n<div class=\"col-sm-6  col-xs-12\">\n<div class=\"p-style-a\"><a class=\"get_started_btn\" href=\"https:\/\/onlineexammaker.com\/features\/ai-question-generator.html?refer=download_questions\" target=\"_blank\" rel=\"noopener\">Tr\u00ecnh t\u1ea1o c\u00e2u h\u1ecfi AI<\/a><\/div>\n<div class=\"p-style-b\">T\u1ea1o c\u00e2u h\u1ecfi cho b\u1ea5t k\u1ef3 ch\u1ee7 \u0111\u1ec1 n\u00e0o<\/div>\n<\/div>\n<div class=\"col-sm-6  col-xs-12\">\n<div class=\"p-style-a\"><a class=\"get_started_btn\" href=\"https:\/\/onlineexammaker.com\/sign-up.html?refer=blog_btn\"> T\u1ea1o m\u1ed9t c\u00e2u \u0111\u1ed1<\/a><\/div>\n<div class=\"p-style-b\">Mi\u1ec5n ph\u00ed 100% m\u00e3i m\u00e3i<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p><script src=\"https:\/\/unpkg.com\/@popperjs\/core@2\"><\/script><br \/>\n<script src=\"https:\/\/unpkg.com\/tippy.js@6\"><\/script><\/p>\n<p><script type=\"text\/javascript\">\nfunction myFunction() {\nvar copyText = document.getElementById(\"copy_questions\");\n\/\/ Copy the text inside the text field\nconsole.log(copyText.innerText)\nnavigator.clipboard.writeText(copyText.innerText);\n}\nvar copy1, copy2;\n        tippy('#copyquestionsBtn', {\n        'content': \"Copy questions to clipboard\",\n       trigger: 'mouseenter',\n       'onCreate':function(instance){\n              copy1 = instance;\n       },\n       'onTrigger' : function(instance, event) {\n              copy2.hide();\n       }\n       });\n       tippy('#copyquestionsBtn', {\n       'content': \"Copied successfully\",\n       trigger: 'click',\n       'onCreate':function(instance){\n              copy2 = instance;\n       },\n       'onTrigger' : function(instance, event) {\n              copy1.hide();\n       }\n       });\n<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Th\u1ed1ng k\u00ea l\u00e0 m\u1ed9t l\u0129nh v\u1ef1c khoa h\u1ecdc v\u00e0 k\u1ef9 thu\u1eadt li\u00ean quan \u0111\u1ebfn vi\u1ec7c thu th\u1eadp, ph\u00e2n t\u00edch, hi\u1ec3u v\u00e0 t\u1ed5ng h\u1ee3p d\u1eef li\u1ec7u \u0111\u1ec3 h\u1ed7 tr\u1ee3 qu\u00e1 tr\u00ecnh ra quy\u1ebft \u0111\u1ecbnh. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t c\u00e1i nh\u00ecn t\u1ed5ng quan v\u1ec1 th\u1ed1ng k\u00ea: 1. M\u1ee5c ti\u00eau c\u1ee7a Th\u1ed1ng k\u00ea: M\u1ee5c ti\u00eau ch\u00ednh c\u1ee7a th\u1ed1ng [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":14463,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6049],"tags":[],"class_list":["post-36445","post","type-post","status-publish","format-standard","hentry","category-questions-answers-vi"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>2026 | 15 c\u00e2u h\u1ecfi v\u00e0 \u0111\u00e1p \u00e1n tr\u1eafc nghi\u1ec7m th\u1ed1ng k\u00ea - OnlineExamMaker 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:\/\/onlineexammaker.com\/kb\/vi\/15-statistics-quiz-questions-and-answers-12\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"2026 | 15 c\u00e2u h\u1ecfi v\u00e0 \u0111\u00e1p \u00e1n tr\u1eafc nghi\u1ec7m th\u1ed1ng k\u00ea - OnlineExamMaker Blog\" \/>\n<meta property=\"og:description\" content=\"Th\u1ed1ng k\u00ea l\u00e0 m\u1ed9t l\u0129nh v\u1ef1c khoa h\u1ecdc v\u00e0 k\u1ef9 thu\u1eadt li\u00ean quan \u0111\u1ebfn vi\u1ec7c thu th\u1eadp, ph\u00e2n t\u00edch, hi\u1ec3u v\u00e0 t\u1ed5ng h\u1ee3p d\u1eef li\u1ec7u \u0111\u1ec3 h\u1ed7 tr\u1ee3 qu\u00e1 tr\u00ecnh ra quy\u1ebft \u0111\u1ecbnh. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t c\u00e1i nh\u00ecn t\u1ed5ng quan v\u1ec1 th\u1ed1ng k\u00ea: 1. 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