{"id":3918,"date":"2024-10-16T10:29:37","date_gmt":"2024-10-16T01:29:37","guid":{"rendered":"https:\/\/bdsl.jbnu.ac.kr\/blog\/?p=3918"},"modified":"2024-10-16T10:34:55","modified_gmt":"2024-10-16T01:34:55","slug":"example-statistical-test","status":"publish","type":"post","link":"https:\/\/bdsl.jbnu.ac.kr\/blog\/example-statistical-test\/","title":{"rendered":"Example &#8211; statistical test"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">JupyterNotebook (JupyterHub)\uc5d0\uc11c \uc544\ub798 code\ub97c \uc2e4\ud589\ud558\uba74\uc11c \ud1b5\uacc4 \ubd84\uc11d \uacfc\uc815\uc744 \uc774\ud574\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Libraroy import <\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"python\" class=\"language-python\">import numpy as np\nimport matplotlib.pyplot as plt\nfrom scipy import stats\nimport seaborn as sns<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\uc784\uc758 \ubcc0\uc218 \uc0dd\uc131 <\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"python\" class=\"language-python\">x = np.random.rand(100)\ny = np.random.rand(100)\nz = x + (0.5 - np.random.rand(100)) * 0.5<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\ubcc0\uc218 \uac12 \uc2dc\uac01\ud654<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"python\" class=\"language-python\">plt.style.use('_mpl-gallery')\n\nfig, ax = plt.subplots()\nax.scatter(x, y, alpha=0.5, label='y')\nax.scatter(x, z, alpha=0.5, label='z')\nax.legend()\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">Pearson&#8217;s correlation test <\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"python\" class=\"language-python\">rho, pv = stats.pearsonr(x, y)\nprint('y', rho, pv)\nrho, pv = stats.pearsonr(x, z)\nprint('z', rho, pv)<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">Normality tests<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"python\" class=\"language-python\">fig = plt.figure(figsize=(7, 3))\nax = fig.add_subplot(1,3,1)\nax2 = fig.add_subplot(1,3,2)\nax3 = fig.add_subplot(1,3,3)\nsns.histplot(x, label='x', bins=20, ax=ax)\nsns.histplot(y, label='y', bins=20, ax=ax2)\nsns.histplot(z, label='y', bins=20, ax=ax3)\nfig.tight_layout()<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">Normality tests &#8211; QQ plot<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"python\" class=\"language-python\">fig = plt.figure(figsize=(7, 3))\nax = fig.add_subplot(1,3,1)\nax2 = fig.add_subplot(1,3,2)\nax3 = fig.add_subplot(1,3,3)\nstats.probplot(x, dist=stats.norm, plot=ax)\nstats.probplot(y, dist=stats.norm, plot=ax2)\nstats.probplot(z, dist=stats.norm, plot=ax3)\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Normality tests &#8211; Shapiro-Wilk test<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"python\" class=\"language-python\"># Shapiro-Wilk test \nst, pv = stats.shapiro(x)\nprint('x', st, pv)\nst, pv = stats.shapiro(y)\nprint('y', st, pv)\nst, pv = stats.shapiro(z)\nprint('z', st, pv)\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Spearman&#8217;s correlation test (for non-normally distributed variable)<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"python\" class=\"language-python\">rho, pv = stats.spearmanr(x, y)\nprint('y', rho, pv)\nrho, pv = stats.spearmanr(x, z)\nprint('z', rho, pv)<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>JupyterNotebook (JupyterHub)\uc5d0\uc11c \uc544\ub798 code\ub97c \uc2e4\ud589\ud558\uba74\uc11c \ud1b5\uacc4 \ubd84\uc11d \uacfc\uc815\uc744 \uc774\ud574\ud569\ub2c8\ub2e4. Libraroy import \uc784\uc758 \ubcc0\uc218 \uc0dd\uc131 \ubcc0\uc218 \uac12 \uc2dc\uac01\ud654 Pearson&#8217;s correlation test Normality tests Normality tests &#8211; QQ plot Normality tests &#8211; Shapiro-Wilk test Spearman&#8217;s correlation test (for non-normally distributed variable)<\/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":"set","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":[1],"tags":[],"class_list":["post-3918","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Example - statistical test - 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\/example-statistical-test\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Example - statistical test - Biomedical Data Science Laboratory\" \/>\n<meta property=\"og:description\" content=\"JupyterNotebook (JupyterHub)\uc5d0\uc11c \uc544\ub798 code\ub97c \uc2e4\ud589\ud558\uba74\uc11c \ud1b5\uacc4 \ubd84\uc11d \uacfc\uc815\uc744 \uc774\ud574\ud569\ub2c8\ub2e4. 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