{"id":1464,"date":"2023-02-14T16:23:07","date_gmt":"2023-02-14T07:23:07","guid":{"rendered":"https:\/\/bdsl.jbnu.ac.kr\/blog\/?p=1464"},"modified":"2023-02-14T17:02:24","modified_gmt":"2023-02-14T08:02:24","slug":"statistical-tests","status":"publish","type":"post","link":"https:\/\/bdsl.jbnu.ac.kr\/blog\/statistical-tests\/","title":{"rendered":"Statistical tests"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Paired or matched observations<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Paired observation\uc740 \uac19\uc740 \uac12\uc758 \ube44\uad50\ub97c \uc758\ubbf8\ud55c\ub2e4. \uc608\ub97c \ub4e4\uc5b4 \ud608\uc555\ub825 \ubcf5\uc6a9 \uc804\/\ud6c4\uc758 \ud608\uc555\uacfc \uac19\uc774, \ub3d9\uc77c\ud55c \uc0ac\ub78c\uc5d0 \ub300\ud55c \ub3d9\uc77c\ud55c \ud608\uc555\uc758 \uce21\uc815\uce58\ub97c \ube44\uad50\ud558\ub294 \uacbd\uc6b0\ub97c \uc758\ubbf8\ud55c\ub2e4.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Variable<\/strong><\/td><td><strong>Test<\/strong><\/td><\/tr><tr><td><strong>nominal<\/strong><\/td><td>McNemar&#8217;s<\/td><\/tr><tr><td><strong>Ordinal<\/strong><\/td><td>Wilcoxon<\/td><\/tr><tr><td><strong>Quantitative (non-normal)<\/strong><\/td><td>Wilcoxon<\/td><\/tr><tr><td><strong>Quantitative (Normal)<\/strong><\/td><td>paired t-test<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Independent observations<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\ud558\ub098\uc758 sample\uc5d0 \ub300\ud574\uc11c \ub450 \uac1c \uc774\uc0c1\uc758 \ubcc0\uc218 \uac12\uc744 \uce21\uc815\ud558\uc600\uc744 \ub54c, \ub450 \ubcc0\uc218\uac00 \ub3c5\ub9bd\uc801\uc778\uc9c0 \uac80\uc99d\ud55c\ub2e4. \uc608\ub97c \ub4e4\uc5b4 \uc2dd\ub2e8\uc758 \ub2f9\uc9c0\uc218\uc640 \uc2dd\uc0ac \uc9c1\ud6c4 \ud608\ub2f9\uc640 \uac19\uc740 \ub450 \ubcc0\uc218\uac00 \uc11c\ub85c \ub3c5\ub9bd\uc801\uc778\uc9c0 \uac80\uc99d \ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><\/td><td><strong>nominal (n=2)<\/strong><\/td><td><strong>nominal (n&gt;2)<\/strong><\/td><td><strong>ordinal<br>(quantitative discrete)<\/strong><\/td><td><strong>Quantitative<br>(Non-normal)<\/strong><\/td><td><strong>Quantitative<br>(Normal)<\/strong><\/td><\/tr><tr><td><strong>nominal (n=2)<\/strong><\/td><td>Chi2 or Fisher&#8217;s<\/td><td>Chi2<\/td><td>Mann-Whitney<\/td><td>Mann-Whitney<\/td><td>Student&#8217;s t-test<\/td><\/tr><tr><td><strong>nominal (n&gt;2)<\/strong><\/td><td>Chi2<\/td><td>Chi2<\/td><td>Kruskal-Wallis<\/td><td>Kruskal-Wallis<\/td><td>ANOVA<\/td><\/tr><tr><td><strong>ordinal<br>(quantitative discrete)<\/strong><\/td><td>Mann-Whitney<\/td><td><\/td><td>Spearman<br>rank<\/td><td>Spearman rank<\/td><td>Spearman rank<br>(*) Linear regression<\/td><\/tr><tr><td><strong>Quantitative (non-normal)<\/strong><\/td><td>(*) Logistic regression<\/td><td><\/td><td><\/td><td>Spearman rank<\/td><td>Spearman rank<br>(*) Linear regression<\/td><\/tr><tr><td><strong>Quantitative (normal)<\/strong><\/td><td>(*) Logistic regression<\/td><td><\/td><td><\/td><td>(*) Linear regression<\/td><td>Pearson<br>(*) Linear regression<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">Colume: output variable (measurement), Row: input variable (conditions)<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Test for normality<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Check normality of a variable before applying statistical methods assuming normal distribution.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Quantile plot <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Goodness-of-Fit test<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Anderson-Darling test <\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"python\" class=\"language-python\">scipy.stats.anderson(x, dist='norm')<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Tests<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>ANOVA<\/li>\n\n\n\n<li>ANCOVA (with covariate effect)<\/li>\n\n\n\n<li>MANOVA<\/li>\n\n\n\n<li>MANCOVA (with covariate effect)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Paired or matched observations Paired observation\uc740 \uac19\uc740 \uac12\uc758 \ube44\uad50\ub97c \uc758\ubbf8\ud55c\ub2e4. \uc608\ub97c \ub4e4\uc5b4 \ud608\uc555\ub825 \ubcf5\uc6a9 \uc804\/\ud6c4\uc758 \ud608\uc555\uacfc \uac19\uc774, \ub3d9\uc77c\ud55c \uc0ac\ub78c\uc5d0 \ub300\ud55c \ub3d9\uc77c\ud55c \ud608\uc555\uc758 \uce21\uc815\uce58\ub97c \ube44\uad50\ud558\ub294 \uacbd\uc6b0\ub97c \uc758\ubbf8\ud55c\ub2e4. Variable Test nominal McNemar&#8217;s Ordinal Wilcoxon Quantitative (non-normal) Wilcoxon Quantitative (Normal) paired t-test Independent observations \ud558\ub098\uc758 sample\uc5d0 \ub300\ud574\uc11c \ub450 \uac1c \uc774\uc0c1\uc758 \ubcc0\uc218 \uac12\uc744 \uce21\uc815\ud558\uc600\uc744 \ub54c, \ub450 \ubcc0\uc218\uac00 \ub3c5\ub9bd\uc801\uc778\uc9c0 \uac80\uc99d\ud55c\ub2e4. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":"","_members_access_role":[],"_members_access_error":""},"categories":[25],"tags":[],"class_list":["post-1464","post","type-post","status-publish","format-standard","hentry","category-data-science"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Statistical tests - Biomedical Data Science Laboratory<\/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:\/\/bdsl.jbnu.ac.kr\/blog\/statistical-tests\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Statistical tests - Biomedical Data Science Laboratory\" \/>\n<meta property=\"og:description\" content=\"Paired or matched observations Paired observation\uc740 \uac19\uc740 \uac12\uc758 \ube44\uad50\ub97c \uc758\ubbf8\ud55c\ub2e4. \uc608\ub97c \ub4e4\uc5b4 \ud608\uc555\ub825 \ubcf5\uc6a9 \uc804\/\ud6c4\uc758 \ud608\uc555\uacfc \uac19\uc774, \ub3d9\uc77c\ud55c \uc0ac\ub78c\uc5d0 \ub300\ud55c \ub3d9\uc77c\ud55c \ud608\uc555\uc758 \uce21\uc815\uce58\ub97c \ube44\uad50\ud558\ub294 \uacbd\uc6b0\ub97c \uc758\ubbf8\ud55c\ub2e4. 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