{"id":310,"date":"2024-06-22T13:45:29","date_gmt":"2024-06-22T13:45:29","guid":{"rendered":"http:\/\/www.ohsumin.com\/sm24_wp\/?p=310"},"modified":"2025-06-11T01:23:00","modified_gmt":"2025-06-11T01:23:00","slug":"%ea%b5%90%ec%b0%a8-%eb%b6%84%ec%84%9dcross-table","status":"publish","type":"post","link":"http:\/\/www.inmining.co.kr\/?p=310","title":{"rendered":"\uad50\ucc28 \ubd84\uc11d(Cross Table)"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns are-vertically-aligned-top is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.32%\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"630\" height=\"630\" src=\"http:\/\/www.ohsumin.com\/sm24_wp\/wp-content\/uploads\/2024\/07\/20240701_165508-1.png\" alt=\"\" class=\"wp-image-480\" style=\"width:115px;height:auto\" srcset=\"http:\/\/www.inmining.co.kr\/sm24_wp\/wp-content\/uploads\/2024\/07\/20240701_165508-1.png 630w, http:\/\/www.inmining.co.kr\/sm24_wp\/wp-content\/uploads\/2024\/07\/20240701_165508-1-300x300.png 300w, http:\/\/www.inmining.co.kr\/sm24_wp\/wp-content\/uploads\/2024\/07\/20240701_165508-1-150x150.png 150w, http:\/\/www.inmining.co.kr\/sm24_wp\/wp-content\/uploads\/2024\/07\/20240701_165508-1-100x100.png 100w\" sizes=\"auto, (max-width: 630px) 100vw, 630px\" \/><\/figure>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.68%\">\n<p class=\"wp-block-paragraph\">\uad50\ucc28\ubd84\uc11d(Cross table)(\ub610\ub294 \uad50\ucc28\ud45c \ubd84\uc11d, Chi-square test of independence)\uc740 \ub450 \ubc94\uc8fc\ud615 \ubcc0\uc218 \uac04\uc758 \ub3c5\ub9bd\uc131\uc744 \ud3c9\uac00\ud558\ub294 \ub370 \uc0ac\uc6a9\ub418\ub294 \ud1b5\uacc4\uc801 \uae30\ubc95\uc785\ub2c8\ub2e4. \uc774 \ubc29\ubc95\uc740 \uac01 \ubcc0\uc218\uc758 \ubc94\uc8fc \uc870\ud569\uc5d0 \ub530\ub978 \ube48\ub3c4\uc218\ub97c \ubc30\uc5f4\ud55c \uad50\ucc28\ud45c\ub97c \uae30\ubc18\uc73c\ub85c, \uad00\ucc30\ub41c \ube48\ub3c4\uc640 \uae30\ub300\ub41c \ube48\ub3c4 \uac04\uc758 \ucc28\uc774\ub97c \uacc4\uc0b0\ud558\uc5ec \ub450 \ubcc0\uc218 \uac04\uc758 \uad00\uacc4\uac00 \uc6b0\uc5f0\uc5d0 \uc758\ud55c \uac83(\ub3c5\ub9bd\uc131)\uc778\uc9c0 \uc544\ub2cc\uc9c0\ub97c \ud310\ub2e8\ud569\ub2c8\ub2e4.<\/p>\n<\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\\(\\)<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%EC%B9%B4%EC%9D%B4%EC%A0%9C%EA%B3%B1_%EB%B6%84%ED%8F%AC%EC%99%80_%EA%B5%90%EC%B0%A8%EB%B6%84%EC%84%9D\"><\/span>\uce74\uc774\uc81c\uacf1 \ubd84\ud3ec\uc640 \uad50\ucc28\ubd84\uc11d<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uce74\uc774\uc81c\uacf1 \ubd84\ud3ec(Chi-square distribution)\ub294 \uad50\ucc28\ubd84\uc11d\uc5d0\uc11c \uc0ac\uc6a9\ub418\ub294 \ubd84\ud3ec\ub85c, \uad00\ucc30\ub41c \ub370\uc774\ud130\uac00 \uae30\ub300\ub41c \ub370\uc774\ud130\uc640 \uc5bc\ub9c8\ub098 \ub2e4\ub978\uc9c0\ub97c \uce21\uc815\ud558\ub294 \ub370 \uc0ac\uc6a9\ub429\ub2c8\ub2e4. \uad50\ucc28\ubd84\uc11d\uc5d0\uc11c \uce74\uc774\uc81c\uacf1 \uac80\uc815 \ud1b5\uacc4\ub7c9(\u03c7\u00b2)\uc740 \ub2e4\uc74c\uacfc \uac19\uc774 \uacc4\uc0b0\ub429\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"has-text-align-center has-medium-font-size wp-block-paragraph\">\\[ \\chi^2 = \\sum \\frac{(O_i &#8211; E_i)^2}{E_i}  \\]<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc5ec\uae30\uc11c:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\\( O_i \\)\ub294 \uad00\ucc30\ub41c \ube48\ub3c4(observed frequency)<\/li>\n\n\n\n<li>\\( E_i \\)\ub294 \uae30\ub300\ub41c \ube48\ub3c4(expected frequency)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%EA%B5%90%EC%B0%A8%EB%B6%84%EC%84%9D%EC%9D%98_%EC%A0%88%EC%B0%A8\"><\/span>\uad50\ucc28\ubd84\uc11d\uc758 \uc808\ucc28<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\uac00\uc124 \uc124\uc815<\/strong>:<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uadc0\ubb34\uac00\uc124( \\( H_0 \\) ): \ub450 \ubcc0\uc218\ub294 \ub3c5\ub9bd\uc801\uc774\ub2e4.<\/li>\n\n\n\n<li>\ub300\ub9bd\uac00\uc124(\\(H_1\\)): \ub450 \ubcc0\uc218\ub294 \ub3c5\ub9bd\uc801\uc774\uc9c0 \uc54a\ub2e4.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\uad50\ucc28\ud45c \uc791\uc131<\/strong>:<\/p>\n\n\n\n<ol class=\"wp-block-list\"><\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ub450 \ubcc0\uc218\uc758 \ubc94\uc8fc \uc870\ud569\uc5d0 \ub530\ub978 \ube48\ub3c4\ub97c \uc815\ub9ac\ud55c \ud45c\ub97c \uc791\uc131\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\uae30\ub300 \ube48\ub3c4 \uacc4\uc0b0<\/strong>:<\/p>\n\n\n\n<ol class=\"wp-block-list\"><\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uac01 \uc140\uc758 \uae30\ub300 \ube48\ub3c4\ub294 \ud589\uc758 \ucd1d\ud569\uacfc \uc5f4\uc758 \ucd1d\ud569\uc744 \uacf1\ud558\uace0 \uc804\uccb4 \ud45c\uc758 \ucd1d\ud569\uc73c\ub85c \ub098\ub204\uc5b4 \uacc4\uc0b0\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li class=\"has-medium-font-size\"> \\( E_{ij} = \\frac{(\ud589 \ud569\uacc4_i) \\times (\uc5f4 \ud569\uacc4_j)}{\uc804\uccb4 \ud569\uacc4}  \\)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\uce74\uc774\uc81c\uacf1 \uac80\uc815 \ud1b5\uacc4\ub7c9 \uacc4\uc0b0<\/strong>:<\/p>\n\n\n\n<ol class=\"wp-block-list\"><\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uac01 \uc140\uc5d0 \ub300\ud574 \uad00\ucc30\ub41c \ube48\ub3c4\uc640 \uae30\ub300\ub41c \ube48\ub3c4\uc758 \ucc28\uc774\ub97c \uc81c\uacf1\ud558\uace0 \uae30\ub300\ub41c \ube48\ub3c4\ub85c \ub098\ub204\uc5b4 \ubaa8\ub450 \ud569\uc0b0\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>p-\uac12 \uacc4\uc0b0 \ubc0f \uacb0\uacfc \ud574\uc11d<\/strong>:<\/p>\n\n\n\n<ol class=\"wp-block-list\"><\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uce74\uc774\uc81c\uacf1 \uac80\uc815 \ud1b5\uacc4\ub7c9\uacfc \uc790\uc720\ub3c4\ub97c \uc0ac\uc6a9\ud558\uc5ec p-\uac12\uc744 \uacc4\uc0b0\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li>p-\uac12\uc774 \uc720\uc758\uc218\uc900(\uc77c\ubc18\uc801\uc73c\ub85c 0.05)\ubcf4\ub2e4 \uc791\uc73c\uba74 \uadc0\ubb34\uac00\uc124\uc744 \uae30\uac01\ud558\uace0, \ub450 \ubcc0\uc218\ub294 \ub3c5\ub9bd\uc801\uc774\uc9c0 \uc54a\ub2e4\uace0 \uacb0\ub860 \ub0b4\ub9bd\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%EC%98%88%EC%8B%9C\"><\/span>\uc608\uc2dc<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ub2e4\uc74c\uc740 \uc608\uc81c \ub370\uc774\ud130\ub97c \uc0ac\uc6a9\ud55c \uad50\ucc28\ubd84\uc11d \uc808\ucc28\ub97c R \ucf54\ub4dc\ub97c \ud1b5\ud574 \uc124\uba85\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\uc608\uc2dc \ub370\uc774\ud130<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code># \uc608\uc2dc \ub370\uc774\ud130 \uc0dd\uc131\ndata &lt;- matrix(c(10, 20, 30, 40, 50, 60), nrow = 2, byrow = TRUE)\ncolnames(data) &lt;- c(\"A\", \"B\", \"C\")\nrownames(data) &lt;- c(\"X\", \"Y\")\ndata<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">R\uc5d0\uc11c \uad50\ucc28\ubd84\uc11d \uc218\ud589<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code># \uce74\uc774\uc81c\uacf1 \uac80\uc815 \uc218\ud589\nchisq_test &lt;- chisq.test(data)\n\n# \uacb0\uacfc \ucd9c\ub825\nprint(chisq_test)<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">\uacb0\uacfc \ud574\uc11d<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code># \uce74\uc774\uc81c\uacf1 \uac80\uc815 \ud1b5\uacc4\ub7c9, \uc790\uc720\ub3c4, p-\uac12 \ucd9c\ub825\nchisq_test$statistic\nchisq_test$parameter\nchisq_test$p.value<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%EC%84%A4%EB%AA%85\"><\/span>\uc124\uba85<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\ub370\uc774\ud130 \uc900\ube44<\/strong>: \uad50\ucc28\ud45c \ud615\ud0dc\ub85c \ub370\uc774\ud130\ub97c \uc900\ube44\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>\uce74\uc774\uc81c\uacf1 \uac80\uc815 \uc218\ud589<\/strong>: <code>chisq.test<\/code> \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\uc5ec \uce74\uc774\uc81c\uacf1 \uac80\uc815\uc744 \uc218\ud589\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>\uacb0\uacfc \ud574\uc11d<\/strong>: \uac80\uc815 \ud1b5\uacc4\ub7c9(\u03c7\u00b2), \uc790\uc720\ub3c4(df), p-\uac12\uc744 \ud655\uc778\ud558\uc5ec \ub450 \ubcc0\uc218 \uac04\uc758 \ub3c5\ub9bd\uc131\uc744 \ud3c9\uac00\ud569\ub2c8\ub2e4.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\uc774\uc640 \uac19\uc774 \uad50\ucc28\ubd84\uc11d\uc744 \ud1b5\ud574 \ub450 \ubc94\uc8fc\ud615 \ubcc0\uc218 \uac04\uc758 \uad00\uacc4\ub97c \ud3c9\uac00\ud560 \uc218 \uc788\uc73c\uba70, \uce74\uc774\uc81c\uacf1 \ubd84\ud3ec\ub97c \uc0ac\uc6a9\ud558\uc5ec \uacb0\uacfc\uc758 \uc720\uc758\uc131\uc744 \ud310\ub2e8\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\uad50\ucc28\ubd84\uc11d(Cross table)(\ub610\ub294 \uad50\ucc28\ud45c \ubd84\uc11d, Chi-square test of independence)\uc740 \ub450 \ubc94\uc8fc\ud615 \ubcc0\uc218 \uac04\uc758 \ub3c5\ub9bd\uc131\uc744 \ud3c9\uac00\ud558\ub294 \ub370 \uc0ac\uc6a9\ub418\ub294 \ud1b5\uacc4\uc801 \uae30\ubc95\uc785\ub2c8\ub2e4&#8230;.<\/p>\n","protected":false},"author":1,"featured_media":311,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-310","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-stat","wpcat-6-id"],"_links":{"self":[{"href":"http:\/\/www.inmining.co.kr\/index.php?rest_route=\/wp\/v2\/posts\/310","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.inmining.co.kr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.inmining.co.kr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.inmining.co.kr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.inmining.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=310"}],"version-history":[{"count":39,"href":"http:\/\/www.inmining.co.kr\/index.php?rest_route=\/wp\/v2\/posts\/310\/revisions"}],"predecessor-version":[{"id":527,"href":"http:\/\/www.inmining.co.kr\/index.php?rest_route=\/wp\/v2\/posts\/310\/revisions\/527"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.inmining.co.kr\/index.php?rest_route=\/wp\/v2\/media\/311"}],"wp:attachment":[{"href":"http:\/\/www.inmining.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=310"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.inmining.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=310"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.inmining.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=310"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}