{"id":40776,"date":"2024-11-04T12:20:24","date_gmt":"2024-11-04T12:20:24","guid":{"rendered":"https:\/\/atmokpo.com\/w\/?p=40776"},"modified":"2024-11-26T06:38:29","modified_gmt":"2024-11-26T06:38:29","slug":"9-%ea%b3%b5%eb%b6%84%ec%82%b0covariance%ea%b3%bc-%ec%83%81%ea%b4%80%ea%b3%84%ec%88%98correlation-coefficient-%ec%83%81%ea%b4%80%ea%b3%84%ec%88%98%eb%a5%bc-%ec%9d%b4%ec%9a%a9%ed%95%9c-%eb%b3%80","status":"publish","type":"post","link":"https:\/\/atmokpo.com\/w\/40776\/","title":{"rendered":"9.\uacf5\ubd84\uc0b0(Covariance)\uacfc \uc0c1\uad00\uacc4\uc218(Correlation Coefficient), \uc0c1\uad00\uacc4\uc218\ub97c \uc774\uc6a9\ud55c \ubcc0\uc218 \uac04 \uc0c1\uad00\uad00\uacc4 \ud574\uc11d"},"content":{"rendered":"<p><body><\/p>\n<p>\ud1b5\uacc4\ud559\uc5d0\uc11c \ub370\uc774\ud130 \ubd84\uc11d\uacfc \ud574\uc11d\uc740 \ub9e4\uc6b0 \uc911\uc694\ud55c \uc5ed\ud560\uc744 \ud558\uba70, \uc774 \uacfc\uc815\uc5d0\uc11c \uacf5\ubd84\uc0b0\uacfc \uc0c1\uad00\uacc4\uc218\ub294 \ub450 \ubcc0\uc218 \uac04\uc758 \uad00\uacc4\ub97c \uc774\ud574\ud558\ub294 \ub370 \ud544\uc218\uc801\uc785\ub2c8\ub2e4. \ubcf8 \uac15\uc88c\uc5d0\uc11c\ub294 \uc774 \ub450 \uac1c\ub150\uc744 \uc0c1\uc138\ud788 \uc124\uba85\ud558\uace0, \uadf8 \uc758\ubbf8\uc640 \ud65c\uc6a9 \ubc29\ubc95\uc744 \ub2e4\uc591\ud55c \uc608\uc81c\ub97c \ud1b5\ud574 \uc0b4\ud3b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n<h2>1. \uacf5\ubd84\uc0b0(Covariance)<\/h2>\n<p>\uacf5\ubd84\uc0b0\uc740 \ub450 \ubcc0\uc218 \uac04\uc758 \uc120\ud615 \uad00\uacc4\uc758 \ubc29\ud5a5\uacfc \uac15\ub3c4\ub97c \uce21\uc815\ud558\ub294 \ud1b5\uacc4\uc801 \uc9c0\ud45c\uc785\ub2c8\ub2e4. \ub300\uc2e0, \uacf5\ubd84\uc0b0\uc758 \uac12 \uc790\uccb4\ub294 \ud574\uc11d\ud558\uae30 \uc5b4\ub824\uc6b8 \uc218 \uc788\uc5b4, \ub2e4\ub978 \uc9c0\ud45c\ub4e4\uacfc \ud568\uaed8 \uc0ac\uc6a9\ud558\ub294 \uac83\uc774 \uc88b\uc2b5\ub2c8\ub2e4.<\/p>\n<h3>1.1. \uacf5\ubd84\uc0b0\uc758 \uc815\uc758<\/h3>\n<p>\ub450 \ubcc0\uc218 X\uc640 Y\uc758 \uacf5\ubd84\uc0b0\uc740 \ub2e4\uc74c\uacfc \uac19\uc774 \uc815\uc758\ub429\ub2c8\ub2e4:<\/p>\n<p style=\"text-align:center;\">COV(X, Y) = E[(X &#8211; \u03bc<sub>X<\/sub>)(Y &#8211; \u03bc<sub>Y<\/sub>)]<\/p>\n<p>\uc5ec\uae30\uc11c E\ub294 \uae30\ub300\uac12\uc744 \ub098\ud0c0\ub0b4\uace0, \u03bc<sub>X<\/sub>\uc640 \u03bc<sub>Y<\/sub>\ub294 \uac01\uac01 X\uc640 Y\uc758 \ud3c9\uade0\uc785\ub2c8\ub2e4. \uc774 \uc2dd\uc740 \ub450 \ubcc0\uc218\uc758 \ud3b8\ucc28\uac00 \ub3d9\uc2dc\uc5d0 \uc5b4\ub5bb\uac8c \ubcc0\ud654\ud558\ub294\uc9c0\ub97c \ub098\ud0c0\ub0c5\ub2c8\ub2e4.<\/p>\n<h3>1.2. \uacf5\ubd84\uc0b0\uc758 \ud574\uc11d<\/h3>\n<ul>\n<li><strong>\uc591\uc218 \uacf5\ubd84\uc0b0:<\/strong> \ub450 \ubcc0\uc218\uac00 \uac19\uc740 \ubc29\ud5a5\uc73c\ub85c \ubcc0\ud654\ud568\uc744 \uc758\ubbf8\ud569\ub2c8\ub2e4. \uc989, X\uac00 \uc99d\uac00\ud558\uba74 Y\ub3c4 \uc99d\uac00\ud558\ub294 \uacbd\ud5a5\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<li><strong>\uc74c\uc218 \uacf5\ubd84\uc0b0:<\/strong> \ub450 \ubcc0\uc218\uac00 \ubc18\ub300 \ubc29\ud5a5\uc73c\ub85c \ubcc0\ud654\ud568\uc744 \uc758\ubbf8\ud569\ub2c8\ub2e4. \uc989, X\uac00 \uc99d\uac00\ud558\uba74 Y\ub294 \uac10\uc18c\ud558\ub294 \uacbd\ud5a5\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<li><strong>\uc81c\ub85c \uacf5\ubd84\uc0b0:<\/strong> \ub450 \ubcc0\uc218 \uac04\uc758 \uad00\uacc4\uac00 \uc5c6\uc74c\uc744 \ub098\ud0c0\ub0c5\ub2c8\ub2e4. \ubcc0\uc218\ub4e4 \uac04\uc758 \ubcc0\ud654\uac00 \uc11c\ub85c \ub3c5\ub9bd\uc801\uc784\uc744 \uc758\ubbf8\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n<h3>1.3. \uacf5\ubd84\uc0b0 \uacc4\uc0b0 \uc608\uc81c<\/h3>\n<p>\uc544\ub798\ub294 X\uc640 Y\ub77c\ub294 \ub450 \ubcc0\uc218\uc758 \uc0d8\ud50c \ub370\uc774\ud130\uc785\ub2c8\ub2e4:<\/p>\n<table style=\"border-collapse:collapse;width:50%;border:1px solid black;\">\n<tr>\n<th style=\"border:1px solid black;\">X<\/th>\n<th style=\"border:1px solid black;\">Y<\/th>\n<\/tr>\n<tr>\n<td style=\"border:1px solid black;\">2<\/td>\n<td style=\"border:1px solid black;\">3<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid black;\">4<\/td>\n<td style=\"border:1px solid black;\">4<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid black;\">6<\/td>\n<td style=\"border:1px solid black;\">5<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid black;\">8<\/td>\n<td style=\"border:1px solid black;\">6<\/td>\n<\/tr>\n<\/table>\n<p>X\uc758 \ud3c9\uade0\uc740 5, Y\uc758 \ud3c9\uade0\uc740 4.5\uc785\ub2c8\ub2e4. \ub530\ub77c\uc11c:<\/p>\n<ul>\n<li>\ud3b8\ucc28 X: -3, -1, 1, 3<\/li>\n<li>\ud3b8\ucc28 Y: -1.5, -0.5, 0.5, 1.5<\/li>\n<\/ul>\n<p>\uc774\uc81c \ud3b8\ucc28\uc758 \uacf1\uc744 \uacc4\uc0b0\ud569\ub2c8\ub2e4:<\/p>\n<ul>\n<li>-3 * -1.5 = 4.5<\/li>\n<li>-1 * -0.5 = 0.5<\/li>\n<li>1 * 0.5 = 0.5<\/li>\n<li>3 * 1.5 = 4.5<\/li>\n<\/ul>\n<p>\ud3b8\ucc28 \uacf1\uc758 \ucd1d\ud569\uc740 10\uc785\ub2c8\ub2e4. \ub530\ub77c\uc11c \uacf5\ubd84\uc0b0\uc740 \ub2e4\uc74c\uacfc \uac19\uc774 \uacc4\uc0b0\ub429\ub2c8\ub2e4:<\/p>\n<p style=\"text-align:center;\">COV(X, Y) = 10 \/ (4 &#8211; 1) = 3.33<\/p>\n<p>\ub530\ub77c\uc11c X\uc640 Y\uc758 \uacf5\ubd84\uc0b0\uc740 3.33\uc785\ub2c8\ub2e4.<\/p>\n<h2>2. \uc0c1\uad00\uacc4\uc218(Correlation Coefficient)<\/h2>\n<p>\uc0c1\uad00\uacc4\uc218\ub294 \ub450 \ubcc0\uc218 \uac04\uc758 \uad00\uacc4\uc758 \uac15\ub3c4\uc640 \ubc29\ud5a5\uc744 \uc815\ub7c9\uc801\uc73c\ub85c \ud45c\ud604\ud558\ub294 \uc9c0\ud45c\uc785\ub2c8\ub2e4. \uacf5\ubd84\uc0b0\uc758 \ud55c\uacc4\ub97c \uadf9\ubcf5\ud558\uc5ec \uac12\uc774 -1\uacfc 1 \uc0ac\uc774\uc5d0 \uc704\uce58\ud558\ub3c4\ub85d \uc815\uaddc\ud654\ub41c \ud615\ud0dc\uc785\ub2c8\ub2e4.<\/p>\n<h3>2.1. \uc0c1\uad00\uacc4\uc218\uc758 \uc815\uc758<\/h3>\n<p>\ud53c\uc5b4\uc2a8 \uc0c1\uad00\uacc4\uc218(Pearson Correlation Coefficient)\ub294 \uac00\uc7a5 \uc77c\ubc18\uc801\uc73c\ub85c \uc0ac\uc6a9\ub418\ub294 \uc0c1\uad00\uacc4\uc218\uc785\ub2c8\ub2e4. \ud53c\uc5b4\uc2a8 \uc0c1\uad00\uacc4\uc218\ub294 \ub2e4\uc74c\uacfc \uac19\uc774 \uc815\uc758\ub429\ub2c8\ub2e4:<\/p>\n<p style=\"text-align:center;\">r = COV(X, Y) \/ (\u03c3<sub>X<\/sub> * \u03c3<sub>Y<\/sub>)<\/p>\n<p>\uc5ec\uae30\uc11c \u03c3\ub294 \ud45c\uc900\ud3b8\ucc28\ub97c \uc758\ubbf8\ud569\ub2c8\ub2e4.<\/p>\n<h3>2.2. \uc0c1\uad00\uacc4\uc218\uc758 \ud574\uc11d<\/h3>\n<ul>\n<li><strong>r = 1:<\/strong> \uc644\ubcbd\ud55c \uc591\uc758 \uc0c1\uad00\uad00\uacc4\ub97c \ub098\ud0c0\ub0c5\ub2c8\ub2e4. \ud55c \ubcc0\uc218\uac00 \uc99d\uac00\ud560 \ub54c \ub2e4\ub978 \ubcc0\uc218\ub3c4 \uc644\ubcbd\ud558\uac8c \uc99d\uac00\ud569\ub2c8\ub2e4.<\/li>\n<li><strong>r = -1:<\/strong> \uc644\ubcbd\ud55c \uc74c\uc758 \uc0c1\uad00\uad00\uacc4\ub97c \ub098\ud0c0\ub0c5\ub2c8\ub2e4. \ud55c \ubcc0\uc218\uac00 \uc99d\uac00\ud560 \ub54c \ub2e4\ub978 \ubcc0\uc218\ub294 \uc644\ubcbd\ud558\uac8c \uac10\uc18c\ud569\ub2c8\ub2e4.<\/li>\n<li><strong>0 &lt; r &lt; 1:<\/strong> \uc591\uc758 \uc0c1\uad00\uad00\uacc4\ub97c \ub098\ud0c0\ub0b4\uba70, r \uac12\uc774 \ud074\uc218\ub85d \uad00\uacc4\uac00 \uac15\ud569\ub2c8\ub2e4.<\/li>\n<li><strong>-1 &lt; r &lt; 0:<\/strong> \uc74c\uc758 \uc0c1\uad00\uad00\uacc4\ub97c \ub098\ud0c0\ub0b4\uba70, r \uac12\uc774 \ud074\uc218\ub85d \uad00\uacc4\uac00 \uac15\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n<h3>2.3. \uc0c1\uad00\uacc4\uc218 \uacc4\uc0b0 \uc608\uc81c<\/h3>\n<p>\uc55e\uc11c \uacc4\uc0b0\ud55c \uacf5\ubd84\uc0b0(3.33)\uc744 \ud65c\uc6a9\ud558\uc5ec X\uc640 Y\uc758 \uc0c1\uad00\uacc4\uc218\ub97c \uacc4\uc0b0\ud574 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4. X\uc640 Y\uc758 \ud45c\uc900 \ud3b8\ucc28\uac00 \uac01\uac01 2.58\uacfc 1.12\ub77c\uace0 \uac00\uc815\ud560 \uacbd\uc6b0, \uc0c1\uad00\uacc4\uc218\ub294 \ub2e4\uc74c\uacfc \uac19\uc774 \uacc4\uc0b0\ub429\ub2c8\ub2e4:<\/p>\n<p style=\"text-align:center;\">r = 3.33 \/ (2.58 * 1.12) = 1.00<\/p>\n<p>\ub530\ub77c\uc11c X\uc640 Y\ub294 \uc644\ubcbd\ud55c \uc591\uc758 \uc0c1\uad00\uad00\uacc4\ub97c \uc9c0\ub2c8\uace0 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<h2>3. \ubcc0\uc218 \uac04 \uc0c1\uad00\uad00\uacc4 \ud574\uc11d<\/h2>\n<p>\uc0c1\uad00\uacc4\uc218\ub97c \ud1b5\ud574 \ubcc0\uc218 \uac04\uc758 \uad00\uacc4\ub97c \ud574\uc11d\ud558\ub294 \uac83\uc740 \ub370\uc774\ud130 \ubd84\uc11d\uc5d0\uc11c \ub9e4\uc6b0 \uc911\uc694\ud55c \uacfc\uc815\uc785\ub2c8\ub2e4. \uadf8\ub7ec\ub098 \uc0c1\uad00\uad00\uacc4\uac00 \uc778\uacfc\uad00\uacc4\ub97c \uc758\ubbf8\ud558\uc9c0 \uc54a\uc74c\uc744 \ud56d\uc0c1 \uba85\uc2ec\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n<h3>3.1. \uc0c1\uad00\uad00\uacc4\uc758 \uadf8\ub798\ud53d \ud45c\ud604<\/h3>\n<p>\ubcc0\uc218 \uac04\uc758 \uc0c1\uad00\uad00\uacc4\ub97c \uc2dc\uac01\ud654\ud558\ub294 \uac83\uc740 \ud328\ud134\uc744 \uc778\uc2dd\ud558\uace0 \ubcf4\ub2e4 \uc9c1\uad00\uc801\uc778 \ud574\uc11d\uc744 \uac00\ub2a5\ud558\uac8c \ud569\ub2c8\ub2e4. \uc0b0\uc810\ub3c4(Scatter Plot)\ub97c \uc0ac\uc6a9\ud558\uc5ec \ubcc0\uc218 X\uc640 Y\uc758 \uad00\uacc4\ub97c \ub098\ud0c0\ub0b4\uba74 \uc88b\uc2b5\ub2c8\ub2e4.<\/p>\n<h3>3.2. \uc0c1\uad00\uad00\uacc4\uc758 \uc608<\/h3>\n<p>\uc608\ub97c \ub4e4\uc5b4, \ud559\uc0dd\ub4e4\uc758 \uacf5\ubd80 \uc2dc\uac04\uacfc \uc2dc\ud5d8 \uc131\uc801 \uac04\uc758 \uc0c1\uad00\uad00\uacc4\ub97c \ubd84\uc11d\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc77c\ubc18\uc801\uc73c\ub85c \uacf5\ubd80 \uc2dc\uac04\uc774 \ub9ce\uc744\uc218\ub85d \uc131\uc801\uc774 \ud5a5\uc0c1\ub418\ub294 \uacbd\ud5a5\uc774 \uc788\uc73c\uba70, \ub530\ub77c\uc11c \ub450 \ubcc0\uc218 \uac04\uc5d0 \uc591\uc758 \uc0c1\uad00\uad00\uacc4\uac00 \uc874\uc7ac\ud560 \uac00\ub2a5\uc131\uc774 \ub192\uc2b5\ub2c8\ub2e4.<\/p>\n<p>\ud558\uc9c0\ub9cc \uc774\ub7ec\ud55c \uc0c1\uad00\uad00\uacc4\uac00 \uc131\uc801\uc5d0 \uc601\ud5a5\uc744 \ubbf8\uce5c\ub2e4\uace0 \ub2e8\uc815\uc9c0\uc744 \uc218\ub294 \uc5c6\uc2b5\ub2c8\ub2e4. \uc2dc\ud5d8\uc744 \uc798 \ubcf4\uae30 \uc704\ud55c \ub2e4\ub978 \ubcc0\uc218\ub4e4\ub3c4 \uc874\uc7ac\ud558\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4.<\/p>\n<h3>3.3. \uc18c\uc18d \uadf8\ub8f9 \uac04\uc758 \ucc28\uc774\uc5d0 \ub530\ub978 \ud574\uc11d<\/h3>\n<p>\uc0c1\uad00\uacc4\uc218\ub294 \ubcc0\uc218\uac00 \ub2e4\ub978 \uadf8\ub8f9\uc5d0 \ub530\ub77c \ub2e4\ub974\uac8c \ub098\ud0c0\ub0a0 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \ub098\uc774\uc640 \uac74\uac15 \uc9c0\uc218 \uac04\uc758 \uad00\uacc4\ub294 \uc11c\ub85c \ub2e4\ub978 \uc5f0\ub839\ub300\uc5d0\uc11c \ub2e4\ub974\uac8c \ud574\uc11d\ub420 \uc218 \uc788\uc73c\uba70, \ucd94\uac00\uc801\uc778 \ubd84\uc11d\uc774 \ud544\uc694\ud569\ub2c8\ub2e4.<\/p>\n<h2>4. \uacb0\ub860<\/h2>\n<p>\uacf5\ubd84\uc0b0\uacfc \uc0c1\uad00\uacc4\uc218\ub294 \ud1b5\uacc4\uc801\uc73c\ub85c \ub450 \ubcc0\uc218 \uac04\uc758 \uad00\uacc4\ub97c \uc124\uba85\ud558\ub294 \ub370 \ud544\uc218\uc801\uc778 \ub3c4\uad6c\uc785\ub2c8\ub2e4. \uc774 \ub450 \uac1c\ub150\uc744 \uc774\ud574\ud558\uace0 \uc801\uc6a9\ud558\ub294 \uac83\uc740 \ub370\uc774\ud130 \ubd84\uc11d \ubc0f \ud574\uc11d\uc5d0\uc11c \uc911\uc694\ud55c \uc5ed\ud560\uc744 \ud558\uba70, \ub370\uc774\ud130 \uac04\uc758 \uad00\uacc4\ub97c \uae4a\uc774 \uc788\uac8c \uc774\ud574\ud558\ub294 \ub370 \uae30\uc5ec\ud569\ub2c8\ub2e4.<\/p>\n<p>\uc774 \uac15\uc88c\ub97c \ud1b5\ud574 \uacf5\ubd84\uc0b0\uacfc \uc0c1\uad00\uacc4\uc218\uc758 \uac1c\ub150\uc774 \uba85\ud655\ud574\uc84c\uae30\ub97c \ubc14\ub78d\ub2c8\ub2e4. \ud5a5\ud6c4 \ub370\uc774\ud130 \ubd84\uc11d \ubc0f \uc5f0\uad6c\uc5d0\uc11c \uc774 \uc9c0\uc2dd\uc774 \uc720\uc6a9\ud558\uac8c \ud65c\uc6a9\ub418\uae30\ub97c \ubc14\ub78d\ub2c8\ub2e4!<\/p>\n<p><\/body><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\ud1b5\uacc4\ud559\uc5d0\uc11c \ub370\uc774\ud130 \ubd84\uc11d\uacfc \ud574\uc11d\uc740 \ub9e4\uc6b0 \uc911\uc694\ud55c \uc5ed\ud560\uc744 \ud558\uba70, \uc774 \uacfc\uc815\uc5d0\uc11c \uacf5\ubd84\uc0b0\uacfc \uc0c1\uad00\uacc4\uc218\ub294 \ub450 \ubcc0\uc218 \uac04\uc758 \uad00\uacc4\ub97c \uc774\ud574\ud558\ub294 \ub370 \ud544\uc218\uc801\uc785\ub2c8\ub2e4. \ubcf8 \uac15\uc88c\uc5d0\uc11c\ub294 \uc774 \ub450 \uac1c\ub150\uc744 \uc0c1\uc138\ud788 \uc124\uba85\ud558\uace0, \uadf8 \uc758\ubbf8\uc640 \ud65c\uc6a9 \ubc29\ubc95\uc744 \ub2e4\uc591\ud55c \uc608\uc81c\ub97c \ud1b5\ud574 \uc0b4\ud3b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4. 1. \uacf5\ubd84\uc0b0(Covariance) \uacf5\ubd84\uc0b0\uc740 \ub450 \ubcc0\uc218 \uac04\uc758 \uc120\ud615 \uad00\uacc4\uc758 \ubc29\ud5a5\uacfc \uac15\ub3c4\ub97c \uce21\uc815\ud558\ub294 \ud1b5\uacc4\uc801 \uc9c0\ud45c\uc785\ub2c8\ub2e4. \ub300\uc2e0, \uacf5\ubd84\uc0b0\uc758 \uac12 \uc790\uccb4\ub294 \ud574\uc11d\ud558\uae30 \uc5b4\ub824\uc6b8 \uc218 \uc788\uc5b4, &hellip; <a href=\"https:\/\/atmokpo.com\/w\/40776\/\" class=\"more-link\">\ub354 \ubcf4\uae30<span class=\"screen-reader-text\"> &#8220;9.\uacf5\ubd84\uc0b0(Covariance)\uacfc \uc0c1\uad00\uacc4\uc218(Correlation Coefficient), \uc0c1\uad00\uacc4\uc218\ub97c \uc774\uc6a9\ud55c \ubcc0\uc218 \uac04 \uc0c1\uad00\uad00\uacc4 \ud574\uc11d&#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-40776","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\/ 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\uc5ed\ud560\uc744 \ud558\uba70, \uc774 \uacfc\uc815\uc5d0\uc11c \uacf5\ubd84\uc0b0\uacfc \uc0c1\uad00\uacc4\uc218\ub294 \ub450 \ubcc0\uc218 \uac04\uc758 \uad00\uacc4\ub97c \uc774\ud574\ud558\ub294 \ub370 \ud544\uc218\uc801\uc785\ub2c8\ub2e4. \ubcf8 \uac15\uc88c\uc5d0\uc11c\ub294 \uc774 \ub450 \uac1c\ub150\uc744 \uc0c1\uc138\ud788 \uc124\uba85\ud558\uace0, \uadf8 \uc758\ubbf8\uc640 \ud65c\uc6a9 \ubc29\ubc95\uc744 \ub2e4\uc591\ud55c \uc608\uc81c\ub97c \ud1b5\ud574 \uc0b4\ud3b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4. 1. \uacf5\ubd84\uc0b0(Covariance) \uacf5\ubd84\uc0b0\uc740 \ub450 \ubcc0\uc218 \uac04\uc758 \uc120\ud615 \uad00\uacc4\uc758 \ubc29\ud5a5\uacfc \uac15\ub3c4\ub97c \uce21\uc815\ud558\ub294 \ud1b5\uacc4\uc801 \uc9c0\ud45c\uc785\ub2c8\ub2e4. \ub300\uc2e0, \uacf5\ubd84\uc0b0\uc758 \uac12 \uc790\uccb4\ub294 \ud574\uc11d\ud558\uae30 \uc5b4\ub824\uc6b8 \uc218 \uc788\uc5b4, &hellip; \ub354 \ubcf4\uae30 &quot;9.\uacf5\ubd84\uc0b0(Covariance)\uacfc \uc0c1\uad00\uacc4\uc218(Correlation 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