{"id":40814,"date":"2024-11-04T12:20:35","date_gmt":"2024-11-04T12:20:35","guid":{"rendered":"https:\/\/atmokpo.com\/w\/?p=40814"},"modified":"2024-11-26T06:38:23","modified_gmt":"2024-11-26T06:38:23","slug":"14-z-%ec%a0%90%ec%88%98z-score%ec%99%80-%ed%91%9c%ec%a4%80%ed%99%94standardization-z-%ec%a0%90%ec%88%98%eb%a5%bc-%ed%99%9c%ec%9a%a9%ed%95%9c-%ec%9d%b4%ec%83%81%ec%b9%98-%ea%b2%80%ec%b6%9c","status":"publish","type":"post","link":"https:\/\/atmokpo.com\/w\/40814\/","title":{"rendered":"14.Z-\uc810\uc218(Z-Score)\uc640 \ud45c\uc900\ud654(Standardization), Z-\uc810\uc218\ub97c \ud65c\uc6a9\ud55c \uc774\uc0c1\uce58 \uac80\ucd9c \ubc0f \ube44\uad50"},"content":{"rendered":"<p>Z-\uc810\uc218(Z-Score)\ub294 \ud1b5\uacc4\ud559\uc5d0\uc11c \ub370\uc774\ud130\ub97c \ud45c\uc900\ud654\ud558\ub294 \ub370 \uc0ac\uc6a9\ub418\ub294 \uc911\uc694\ud55c \uac1c\ub150\uc785\ub2c8\ub2e4. \uc774\ub294 \uc8fc\uc5b4\uc9c4 \ub370\uc774\ud130 \ud3ec\uc778\ud2b8\uac00 \uc804\uccb4 \ub370\uc774\ud130 \uc138\ud2b8\uc5d0\uc11c \uc5bc\ub9c8\ub098 \ub5a8\uc5b4\uc838 \uc788\ub294\uc9c0\ub97c \uce21\uc815\ud558\ub294 \uc9c0\ud45c\ub85c, \ud45c\uc900\ud654\ub41c \ub370\uc774\ud130 \ubd84\uc11d\uc744 \ud1b5\ud574 \ub2e4\uc591\ud55c \ud1b5\uacc4\uc801 \uacb0\ub860\uc744 \ub3c4\ucd9c\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ubcf8 \uac15\uc88c\uc5d0\uc11c\ub294 Z-\uc810\uc218\uc758 \uc815\uc758, \ud45c\uc900\ud654 \uacfc\uc815, Z-\uc810\uc218\ub97c \ud65c\uc6a9\ud55c \uc774\uc0c1\uce58 \uac80\ucd9c \ubc0f \ube44\uad50 \ubc29\ubc95\uc5d0 \ub300\ud574 \uc790\uc138\ud788 \uc124\uba85\ud558\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n<h2>1. Z-\uc810\uc218(Z-Score)\uc758 \uc815\uc758<\/h2>\n<p>Z-\uc810\uc218\ub294 \ud2b9\uc815 \uac12\uc774 \ud3c9\uade0\uc73c\ub85c\ubd80\ud130 \uc5bc\ub9c8\ub098 \ub5a8\uc5b4\uc838 \uc788\ub294\uc9c0\ub97c \ub098\ud0c0\ub0b4\ub294 \ud45c\uc900\ud654\ub41c \uac12\uc785\ub2c8\ub2e4. \ud1b5\uacc4\uc801\uc73c\ub85c Z-\uc810\uc218\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \uacf5\uc2dd\uc744 \uc0ac\uc6a9\ud558\uc5ec \uacc4\uc0b0\ub429\ub2c8\ub2e4.<\/p>\n<pre><code>Z = (X - \u03bc) \/ \u03c3<\/code><\/pre>\n<p>\uc5ec\uae30\uc11c:<\/p>\n<ul>\n<li><strong>Z<\/strong>: Z-\uc810\uc218<\/li>\n<li><strong>X<\/strong>: \uac1c\ubcc4 \ub370\uc774\ud130 \ud3ec\uc778\ud2b8<\/li>\n<li><strong>\u03bc<\/strong>: \ub370\uc774\ud130 \uc138\ud2b8\uc758 \ud3c9\uade0<\/li>\n<li><strong>\u03c3<\/strong>: \ub370\uc774\ud130 \uc138\ud2b8\uc758 \ud45c\uc900\ud3b8\ucc28<\/li>\n<\/ul>\n<h3>1.1 Z-\uc810\uc218\uc758 \ud574\uc11d<\/h3>\n<p>Z-\uc810\uc218\ub294 \ub370\uc774\ud130 \ud3ec\uc778\ud2b8\uac00 \ud3c9\uade0\uc73c\ub85c\ubd80\ud130 \uc5bc\ub9c8\ub098 \ubc97\uc5b4\ub098\ub294\uc9c0\ub97c \ub098\ud0c0\ub0b4\ubbc0\ub85c, Z-\uc810\uc218\uac00 \uc591\uc218\uc77c \uacbd\uc6b0 \ud574\ub2f9 \uac12\uc774 \ud3c9\uade0\ubcf4\ub2e4 \ud06c\uace0, \uc74c\uc218\uc77c \uacbd\uc6b0 \ud3c9\uade0\ubcf4\ub2e4 \uc791\uc74c\uc744 \uc758\ubbf8\ud569\ub2c8\ub2e4. \ub610\ud55c Z-\uc810\uc218\uc758 \uc808\ub300 \uac12\uc774 \ud074\uc218\ub85d \ud574\ub2f9 \ub370\uc774\ud130 \ud3ec\uc778\ud2b8\uac00 \ud3c9\uade0\uc5d0\uc11c \uba40\ub9ac \ub5a8\uc5b4\uc838 \uc788\ub2e4\ub294 \ub73b\uc785\ub2c8\ub2e4.<\/p>\n<h2>2. \ud45c\uc900\ud654(Standardization)<\/h2>\n<p>\ud45c\uc900\ud654\ub294 \uc6d0\ub798 \ub370\uc774\ud130\uc758 \ud3c9\uade0\uc744 0, \ud45c\uc900\ud3b8\ucc28\ub97c 1\ub85c \ubcc0\ud658\ud558\uc5ec \ub370\uc774\ud130\uc758 \uc2a4\ucf00\uc77c\uc744 \uc870\uc815\ud558\ub294 \uacfc\uc815\uc785\ub2c8\ub2e4. \uc774\ub294 \uc11c\ub85c \ub2e4\ub978 \ud615\ud0dc\uc758 \ub370\uc774\ud130\ub97c \ub3d9\uc77c\ud55c \uae30\uc900\uc5d0\uc11c \ube44\uad50\ud560 \uc218 \uc788\uac8c \ud574\uc90d\ub2c8\ub2e4.<\/p>\n<h3>2.1 \ud45c\uc900\ud654 \uc808\ucc28<\/h3>\n<ol>\n<li>\ub370\uc774\ud130\uc758 \ud3c9\uade0(\u03bc)\uc744 \uacc4\uc0b0\ud569\ub2c8\ub2e4.<\/li>\n<li>\ub370\uc774\ud130\uc758 \ud45c\uc900\ud3b8\ucc28(\u03c3)\ub97c \uacc4\uc0b0\ud569\ub2c8\ub2e4.<\/li>\n<li>\uac01 \ub370\uc774\ud130 \ud3ec\uc778\ud2b8\uc5d0 \ub300\ud574 Z-\uc810\uc218\ub97c \uacc4\uc0b0\ud569\ub2c8\ub2e4.<\/li>\n<\/ol>\n<p>\uc704\uc758 \uc808\ucc28\ub97c \ud1b5\ud574 \uc5bb\uc5b4\uc9c4 Z-\uc810\uc218\ub4e4\uc740 \ud45c\uc900 \uc815\uaddc \ubd84\ud3ec\ub97c \ub530\ub974\uac8c \ub418\uba70, \uc774\ub97c \ud1b5\ud574 \ub2e4\uc591\ud55c \ubd84\uc11d\uc744 \uc218\ud589\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<h2>3. Z-\uc810\uc218\ub97c \ud65c\uc6a9\ud55c \uc774\uc0c1\uce58 \uac80\ucd9c<\/h2>\n<p>\uc774\uc0c1\uce58(outlier)\ub294 \ub370\uc774\ud130 \uc138\ud2b8\uc5d0\uc11c \ub2e4\ub978 \uac12\ub4e4\uacfc \ud604\uc800\ud788 \ucc28\uc774 \ub098\ub294 \uac12\uc744 \uc758\ubbf8\ud569\ub2c8\ub2e4. \uc774\uc0c1\uce58\ub294 \ub370\uc774\ud130 \ubd84\uc11d \uacb0\uacfc\uc5d0 \ubd80\uc815\uc801\uc778 \uc601\ud5a5\uc744 \ubbf8\uce60 \uc218 \uc788\uc73c\ubbc0\ub85c, \uc774\uc5d0 \ub300\ud55c \uac80\ucd9c\uc740 \ub9e4\uc6b0 \uc911\uc694\ud569\ub2c8\ub2e4. Z-\uc810\uc218\ub97c \uc774\uc6a9\ud558\uc5ec \uc774\uc0c1\uce58\ub97c \uac80\ucd9c\ud558\ub294 \ubc29\ubc95\uc5d0 \ub300\ud574 \uc54c\uc544\ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n<h3>3.1 \uc774\uc0c1\uce58 \uae30\uc900 \uc124\uc815<\/h3>\n<p>\ub300\ubd80\ubd84\uc758 \uacbd\uc6b0, Z-\uc810\uc218\uac00 3\ubcf4\ub2e4 \ud06c\uac70\ub098 -3\ubcf4\ub2e4 \uc791\uc740 \uacbd\uc6b0\ub97c \uc774\uc0c1\uce58\ub85c \uac04\uc8fc\ud569\ub2c8\ub2e4. \uc774\ub294 \ud1b5\uacc4\uc801\uc73c\ub85c \uc2e4\uc81c \uc815\uaddc \ubd84\ud3ec\ub97c \ub530\ub974\ub294 \ub370\uc774\ud130\uc5d0\uc11c \ubc97\uc5b4\ub09c \uac12\uc73c\ub85c, \ub2e4\ub978 \ub370\uc774\ud130\uc640 \ube44\uad50\ud588\uc744 \ub54c \uc0c1\uad00\uad00\uacc4\uac00 \ub0ae\uc744 \uac00\ub2a5\uc131\uc774 \ub192\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4.<\/p>\n<h3>3.2 \uc608\uc2dc\ub97c \ud1b5\ud55c \uc774\uc0c1\uce58 \uac80\ucd9c<\/h3>\n<p>\uac00\uc0c1\uc758 \ub370\uc774\ud130 \uc138\ud2b8\ub97c \ud1b5\ud574 Z-\uc810\uc218\ub97c \ud65c\uc6a9\ud55c \uc774\uc0c1\uce58 \uac80\ucd9c\uc744 \uc124\uba85\ud558\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n<pre><code>\ub370\uc774\ud130 \uc138\ud2b8: [10, 12, 12, 13, 12, 12, 10, 15, 12, 10, 100]\n<\/code><\/pre>\n<p>\uc704 \ub370\uc774\ud130\uc758 \ud3c9\uade0\uacfc \ud45c\uc900\ud3b8\ucc28\ub97c \uacc4\uc0b0\ud55c \ud6c4 Z-\uc810\uc218\ub97c \ucc3e\uc544\ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n<pre><code>1. \ud3c9\uade0(\u03bc) \uacc4\uc0b0: \u03bc = (10 + 12 + 12 + 13 + 12 + 12 + 10 + 15 + 12 + 10 + 100) \/ 11 = 12.27\n2. \ud45c\uc900\ud3b8\ucc28(\u03c3) \uacc4\uc0b0: \u03c3 = sqrt( \u03a3(Xi - \u03bc)^2 \/ N ) = 22.41\n3. \uc774\uc0c1\uce58 \ud310\ubcc4: Z = (X - \u03bc) \/ \u03c3\n<\/code><\/pre>\n<p>Z-\uc810\uc218\ub97c \uacc4\uc0b0\ud55c \uacb0\uacfc, 100\uc774\ub77c\ub294 \uc218\uce58\ub294 Z-\uc810\uc218\uac00 3\uc744 \ucd08\uacfc\ud558\uac8c \ub418\ubbc0\ub85c \uc774\uc0c1\uce58\ub85c \ud310\ub2e8\ub429\ub2c8\ub2e4.<\/p>\n<h2>4. Z-\uc810\uc218\ub97c \ud65c\uc6a9\ud55c \ub370\uc774\ud130 \ube44\uad50<\/h2>\n<p>Z-\uc810\uc218\ub97c \ud1b5\ud574 \uc11c\ub85c \ub2e4\ub978 \ub370\uc774\ud130 \uc138\ud2b8\ub97c \ube44\uad50\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uac19\uc740 \ub2e8\uc704 \ub610\ub294 \ub2e4\ub978 \ub2e8\uc704\ub97c \uac00\uc9c4 \ub370\uc774\ud130\ub4e4 \uac04\uc758 \ube44\uad50\uac00 \uac00\ub2a5\ud569\ub2c8\ub2e4. \uc774\ub294 \ub2e4\uc591\ud55c \ubd84\uc57c\uc5d0\uc11c \uc0ac\uc6a9\ub418\uba70, \ud2b9\ud788 \uc758\ub8cc \ubd84\uc57c\ub098 \uacbd\uc81c\ud559\uc5d0\uc11c \uc720\uc6a9\ud558\uac8c \uc4f0\uc785\ub2c8\ub2e4.<\/p>\n<h3>4.1 Z-\uc810\uc218\ub97c \ud65c\uc6a9\ud55c \ub450 \uc9d1\ub2e8 \ube44\uad50<\/h3>\n<p>A\uc640 B \ub450 \uc9d1\ub2e8\uc758 \ud3c9\uade0\uacfc \ud45c\uc900\ud3b8\ucc28\uac00 \uc8fc\uc5b4\uc84c\uc744 \ub54c, \uac01 \uc9d1\ub2e8\uc758 Z-\uc810\uc218\ub97c \uacc4\uc0b0\ud558\uc5ec \uadf8 \uc9d1\ub2e8 \ub0b4\uc5d0\uc11c\uc758 \uc0c1\ub300\uc801\uc778 \uc704\uce58\ub97c \ud310\ub2e8\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \ud559\uc0dd\ub4e4\uc758 \uc131\uc801\uc744 \uae30\ubc18\uc73c\ub85c Z-\uc810\uc218\ub97c \uacc4\uc0b0\ud558\uc5ec \ub450 \ubc18\uc758 \uc131\uc801 \ucc28\uc774\ub97c \ud30c\uc545\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<pre><code>\uc9d1\ub2e8 A \uc131\uc801: [70, 80, 90]\n\uc9d1\ub2e8 B \uc131\uc801: [60, 75, 85]\n\n1. \uc9d1\ub2e8 A\uc758 \ud3c9\uade0\uacfc \ud45c\uc900\ud3b8\ucc28 \uacc4\uc0b0.\n2. \uc9d1\ub2e8 B\uc758 \ud3c9\uade0\uacfc \ud45c\uc900\ud3b8\ucc28 \uacc4\uc0b0.\n3. \uac01 \ud559\uc0dd\uc758 Z-\uc810\uc218 \uacc4\uc0b0 \ud6c4 \ub450 \uc9d1\ub2e8 \ube44\uad50.\n<\/code><\/pre>\n<p>\uc774\ub97c \ud1b5\ud574 \ub450 \uc9d1\ub2e8\uc758 \uc131\uc801\uc774 \uc0c1\ub300\uc801\uc73c\ub85c \uc5b4\ub5a4\uc9c0\ub97c \ubd84\uc11d\ud558\uace0 \ube44\uad50\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<h2>5. \uacb0\ub860<\/h2>\n<p>Z-\uc810\uc218\ub294 \ub370\uc774\ud130 \ubd84\uc11d\uc5d0 \uc788\uc5b4 \ub108\ubb34\ub098 \uc911\uc694\ud55c \ub3c4\uad6c\uc785\ub2c8\ub2e4. \ud45c\uc900\ud654\ub97c \ud1b5\ud574 \ub370\uc774\ud130\uc758 \ube44\uad50\ub97c \uc6a9\uc774\ud558\uac8c \ud558\uace0, \uc774\uc0c1\uce58\ub97c \uac80\ucd9c\ud568\uc73c\ub85c\uc368 \ub370\uc774\ud130 \ud488\uc9c8\uc744 \ud5a5\uc0c1\uc2dc\ud0ac \uc218 \uc788\uc2b5\ub2c8\ub2e4. Z-\uc810\uc218\ub97c \ud65c\uc6a9\ud558\uba74 \ud1b5\uacc4\uc801 \ucd94\ub860\uacfc \uc758\uc0ac\uacb0\uc815 \uacfc\uc815\uc5d0\uc11c \uc911\uc694\ud55c \uc5ed\ud560\uc744 \ud558\uac8c \ub429\ub2c8\ub2e4.<\/p>\n<h2>\ucc38\uace0\ubb38\ud5cc<\/h2>\n<ul>\n<li>Montgomery, D. C., &amp; Runger, G. C. (2010). Applied Statistics and Probability for Engineers. Wiley.<\/li>\n<li>Howell, D. C. (2013). Statistical Methods for Psychology. Cengage Learning.<\/li>\n<li>Field, A. (2013). Discovering Statistics Using IBM SPSS Statistics. SAGE Publications.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Z-\uc810\uc218(Z-Score)\ub294 \ud1b5\uacc4\ud559\uc5d0\uc11c \ub370\uc774\ud130\ub97c \ud45c\uc900\ud654\ud558\ub294 \ub370 \uc0ac\uc6a9\ub418\ub294 \uc911\uc694\ud55c \uac1c\ub150\uc785\ub2c8\ub2e4. \uc774\ub294 \uc8fc\uc5b4\uc9c4 \ub370\uc774\ud130 \ud3ec\uc778\ud2b8\uac00 \uc804\uccb4 \ub370\uc774\ud130 \uc138\ud2b8\uc5d0\uc11c \uc5bc\ub9c8\ub098 \ub5a8\uc5b4\uc838 \uc788\ub294\uc9c0\ub97c \uce21\uc815\ud558\ub294 \uc9c0\ud45c\ub85c, \ud45c\uc900\ud654\ub41c \ub370\uc774\ud130 \ubd84\uc11d\uc744 \ud1b5\ud574 \ub2e4\uc591\ud55c \ud1b5\uacc4\uc801 \uacb0\ub860\uc744 \ub3c4\ucd9c\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ubcf8 \uac15\uc88c\uc5d0\uc11c\ub294 Z-\uc810\uc218\uc758 \uc815\uc758, \ud45c\uc900\ud654 \uacfc\uc815, Z-\uc810\uc218\ub97c \ud65c\uc6a9\ud55c \uc774\uc0c1\uce58 \uac80\ucd9c \ubc0f \ube44\uad50 \ubc29\ubc95\uc5d0 \ub300\ud574 \uc790\uc138\ud788 \uc124\uba85\ud558\uaca0\uc2b5\ub2c8\ub2e4. 1. Z-\uc810\uc218(Z-Score)\uc758 \uc815\uc758 Z-\uc810\uc218\ub294 \ud2b9\uc815 \uac12\uc774 \ud3c9\uade0\uc73c\ub85c\ubd80\ud130 \uc5bc\ub9c8\ub098 \ub5a8\uc5b4\uc838 &hellip; <a href=\"https:\/\/atmokpo.com\/w\/40814\/\" class=\"more-link\">\ub354 \ubcf4\uae30<span class=\"screen-reader-text\"> &#8220;14.Z-\uc810\uc218(Z-Score)\uc640 \ud45c\uc900\ud654(Standardization), Z-\uc810\uc218\ub97c \ud65c\uc6a9\ud55c \uc774\uc0c1\uce58 \uac80\ucd9c \ubc0f \ube44\uad50&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[219],"tags":[],"class_list":["post-40814","post","type-post","status-publish","format-standard","hentry","category-219"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>14.Z-\uc810\uc218(Z-Score)\uc640 \ud45c\uc900\ud654(Standardization), Z-\uc810\uc218\ub97c \ud65c\uc6a9\ud55c \uc774\uc0c1\uce58 \uac80\ucd9c \ubc0f \ube44\uad50 - \ub77c\uc774\ube0c\uc2a4\ub9c8\ud2b8<\/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:\/\/atmokpo.com\/w\/40814\/\" \/>\n<meta property=\"og:locale\" content=\"ko_KR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"14.Z-\uc810\uc218(Z-Score)\uc640 \ud45c\uc900\ud654(Standardization), Z-\uc810\uc218\ub97c \ud65c\uc6a9\ud55c \uc774\uc0c1\uce58 \uac80\ucd9c \ubc0f \ube44\uad50 - \ub77c\uc774\ube0c\uc2a4\ub9c8\ud2b8\" \/>\n<meta property=\"og:description\" content=\"Z-\uc810\uc218(Z-Score)\ub294 \ud1b5\uacc4\ud559\uc5d0\uc11c \ub370\uc774\ud130\ub97c \ud45c\uc900\ud654\ud558\ub294 \ub370 \uc0ac\uc6a9\ub418\ub294 \uc911\uc694\ud55c \uac1c\ub150\uc785\ub2c8\ub2e4. \uc774\ub294 \uc8fc\uc5b4\uc9c4 \ub370\uc774\ud130 \ud3ec\uc778\ud2b8\uac00 \uc804\uccb4 \ub370\uc774\ud130 \uc138\ud2b8\uc5d0\uc11c \uc5bc\ub9c8\ub098 \ub5a8\uc5b4\uc838 \uc788\ub294\uc9c0\ub97c \uce21\uc815\ud558\ub294 \uc9c0\ud45c\ub85c, \ud45c\uc900\ud654\ub41c \ub370\uc774\ud130 \ubd84\uc11d\uc744 \ud1b5\ud574 \ub2e4\uc591\ud55c \ud1b5\uacc4\uc801 \uacb0\ub860\uc744 \ub3c4\ucd9c\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ubcf8 \uac15\uc88c\uc5d0\uc11c\ub294 Z-\uc810\uc218\uc758 \uc815\uc758, \ud45c\uc900\ud654 \uacfc\uc815, Z-\uc810\uc218\ub97c \ud65c\uc6a9\ud55c \uc774\uc0c1\uce58 \uac80\ucd9c \ubc0f \ube44\uad50 \ubc29\ubc95\uc5d0 \ub300\ud574 \uc790\uc138\ud788 \uc124\uba85\ud558\uaca0\uc2b5\ub2c8\ub2e4. 1. 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