{"id":504,"date":"2023-07-29T16:34:41","date_gmt":"2023-07-29T16:34:41","guid":{"rendered":"https:\/\/statorials.org\/ko\/%e1%84%83%e1%85%a1%e1%84%8c%e1%85%ae%e1%86%bc-%e1%84%89%e1%85%a5%e1%86%ab%e1%84%92%e1%85%a7%e1%86%bc-%e1%84%92%e1%85%ac%e1%84%80%e1%85%b1-r\/"},"modified":"2023-07-29T16:34:41","modified_gmt":"2023-07-29T16:34:41","slug":"%e1%84%83%e1%85%a1%e1%84%8c%e1%85%ae%e1%86%bc-%e1%84%89%e1%85%a5%e1%86%ab%e1%84%92%e1%85%a7%e1%86%bc-%e1%84%92%e1%85%ac%e1%84%80%e1%85%b1-r","status":"publish","type":"post","link":"https:\/\/statorials.org\/ko\/%e1%84%83%e1%85%a1%e1%84%8c%e1%85%ae%e1%86%bc-%e1%84%89%e1%85%a5%e1%86%ab%e1%84%92%e1%85%a7%e1%86%bc-%e1%84%92%e1%85%ac%e1%84%80%e1%85%b1-r\/","title":{"rendered":"R\uc5d0\uc11c \ub2e4\uc911 \uc120\ud615 \ud68c\uadc0\ub97c \uc218\ud589\ud558\ub294 \ubc29\ubc95"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">\uc774 \uac00\uc774\ub4dc\uc5d0\uc11c\ub294 \ub2e4\uc74c\uc744 \ud3ec\ud568\ud558\uc5ec R\uc5d0\uc11c <a href=\"https:\/\/statorials.org\/ko\/\u1103\u1161\u110c\u116e\u11bc-\u1109\u1165\u11ab\u1112\u1167\u11bc-\u1112\u116c\u1100\u1171\/\" target=\"_blank\" rel=\"noopener\">\ub2e4\uc911 \uc120\ud615 \ud68c\uadc0\ub97c<\/a> \uc218\ud589\ud558\ub294 \ubc29\ubc95\uc758 \uc608\ub97c \ubcf4\uc5ec\uc90d\ub2c8\ub2e4.<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">\ubaa8\ub378\uc744 \ud53c\ud305\ud558\uae30 \uc804\uc5d0 \ub370\uc774\ud130 \uac80\uc0ac<\/span><\/li>\n<li> <span style=\"color: #000000;\">\ubaa8\ub378 \uc870\uc815<\/span><\/li>\n<li> <span style=\"color: #000000;\">\ubaa8\ub378 \uac00\uc815 \ud655\uc778<\/span><\/li>\n<li> <span style=\"color: #000000;\">\ubaa8\ub378 \ucd9c\ub825 \ud574\uc11d<\/span><\/li>\n<li> <span style=\"color: #000000;\">\ubaa8\ub378 \uc801\ud569\ub3c4 \ud3c9\uac00<\/span><\/li>\n<li> <span style=\"color: #000000;\">\ubaa8\ub378\uc744 \uc0ac\uc6a9\ud558\uc5ec \uc608\uce21\ud558\uae30<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">\uac11\uc2dc\ub2e4!<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>\uc2dc\uc124<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">\uc774 \uc608\uc5d0\uc11c\ub294 32\uac00\uc9c0 \uc790\ub3d9\ucc28\uc758 \ub2e4\uc591\ud55c \uc18d\uc131\uc5d0 \ub300\ud55c \uc815\ubcf4\uac00 \ud3ec\ud568\ub41c \ub0b4\uc7a5 R \ub370\uc774\ud130 \uc138\ud2b8 <a href=\"https:\/\/statorials.org\/ko\/mtcars-r-\u1103\u1166\u110b\u1175\u1110\u1165-\u1109\u1166\u1110\u1173\/\" target=\"_blank\" rel=\"noopener\"><em>mtcars\ub97c<\/em><\/a> \uc0ac\uc6a9\ud569\ub2c8\ub2e4.<\/span><\/p>\n<pre style=\"background-color: #e5e5e5; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#view first six lines of <em>mtcars<\/em><\/span>\nhead(mtcars)\n\n# mpg cyl disp hp drat wt qsec vs am gear carb\n#Mazda RX4 21.0 6 160 110 3.90 2.620 16.46 0 1 4 4\n#Mazda RX4 Wag 21.0 6 160 110 3.90 2.875 17.02 0 1 4 4\n#Datsun 710 22.8 4 108 93 3.85 2.320 18.61 1 1 4 1\n#Hornet 4 Drive 21.4 6 258 110 3.08 3.215 19.44 1 0 3 1\n#Hornet Sportabout 18.7 8 360 175 3.15 3.440 17.02 0 0 3 2\n#Valiant 18.1 6 225 105 2.76 3.460 20.22 1 0 3 1\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">\uc774 \uc608\uc5d0\uc11c\ub294 <em>mpg\ub97c<\/em> \uc751\ub2f5 \ubcc0\uc218\ub85c \uc0ac\uc6a9\ud558\uace0 <em>disp<\/em> , <em>hp<\/em> \ubc0f <em>drat\ub97c<\/em> \uc608\uce21 \ubcc0\uc218\ub85c \uc0ac\uc6a9\ud558\ub294 \ub2e4\uc911 \uc120\ud615 \ud68c\uadc0 \ubaa8\ub378\uc744 \uad6c\ucd95\ud569\ub2c8\ub2e4.<\/span><\/p>\n<pre style=\"background-color: #e5e5e5; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create new data frame that contains only the variables we would like to use to\n<\/span>data &lt;- mtcars[, c(\"mpg\", \"disp\", \"hp\", \"drat\")]\n\n<span style=\"color: #008080;\">#view first six rows of new data frame\n<span style=\"color: #000000;\">head(data)\n\n# mpg disp hp drat\n#Mazda RX4 21.0 160 110 3.90\n#Mazda RX4 Wag 21.0 160 110 3.90\n#Datsun 710 22.8 108 93 3.85\n#Hornet 4 Drive 21.4 258 110 3.08\n#Hornet Sportabout 18.7 360 175 3.15\n#Valiant 18.1 225 105 2.76<\/span><\/span><\/strong><\/pre>\n<h3> <span style=\"color: #000000;\"><strong>\ub370\uc774\ud130 \uac80\ud1a0<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">\ubaa8\ub378\uc744 \ud53c\ud305\ud558\uae30 \uc804\uc5d0 \ub370\uc774\ud130\ub97c \ubcf4\uace0 \ub354 \uc798 \uc774\ud574\ud560 \uc218 \uc788\uc73c\uba70 \ub2e4\uc911 \uc120\ud615 \ud68c\uadc0\uac00 \uc774 \ub370\uc774\ud130\uc5d0 \uc801\ud569\ud55c \ubaa8\ub378\uc774 \ub420 \uc218 \uc788\ub294\uc9c0 \uc2dc\uac01\uc801\uc73c\ub85c \ud3c9\uac00\ud560 \uc218\ub3c4 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\ud2b9\ud788, \uc608\uce21 \ubcc0\uc218\uac00 \uc751\ub2f5 \ubcc0\uc218\uc640 <em>\uc120\ud615<\/em> \uc5f0\uad00\uc131\uc744 \uac00\uc9c0\uace0 \uc788\ub294\uc9c0 \ud655\uc778\ud574\uc57c \ud558\uba70, \uc774\ub294 \ub2e4\uc911 \uc120\ud615 \ud68c\uadc0 \ubaa8\ub378\uc774 \uc801\ud569\ud560 \uc218 \uc788\uc74c\uc744 \ub098\ud0c0\ub0c5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uc774\ub97c \uc704\ud574 <strong>pair()<\/strong> \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\uc5ec \uac00\ub2a5\ud55c \uac01 \ubcc0\uc218 \uc30d\uc758 \uc0b0\uc810\ub3c4\ub97c \ub9cc\ub4e4 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<pre style=\"background-color: #e5e5e5; font-size: 15px;\"> <strong>pairs(data, pch = 18, col = \"steelblue\")<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">\uc774 \uc30d \uadf8\ub798\ud504\uc5d0\uc11c \ub2e4\uc74c\uc744 \ubcfc \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><em>mpg<\/em> \uc640 <em>\uac00\uc6a9\uc131\uc740<\/em> \uac15\ud55c \uc74c\uc758 \uc120\ud615 \uc0c1\uad00\uad00\uacc4\ub97c \uac16\ub294 \uac83\uc73c\ub85c \ubcf4\uc785\ub2c8\ub2e4.<\/span><\/li>\n<li> <span style=\"color: #000000;\"><em>mpg<\/em> \uc640 <em>hp\ub294<\/em> \uac15\ud55c \uc591\uc758 \uc120\ud615 \uc0c1\uad00\uad00\uacc4\ub97c \uac16\ub294 \uac83\uc73c\ub85c \ubcf4\uc785\ub2c8\ub2e4.<\/span><\/li>\n<li> <span style=\"color: #000000;\"><em>mpg<\/em> \uc640 <em>drat\ub294<\/em> \uc57d\uac04\uc758 \uc74c\uc758 \uc120\ud615 \uc0c1\uad00\uad00\uacc4\ub97c \ubcf4\uc774\ub294 \uac83\uc73c\ub85c \ubcf4\uc785\ub2c8\ub2e4.<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\"><strong>GGally<\/strong> \ub77c\uc774\ube0c\ub7ec\ub9ac\uc758 <strong>ggpairs()<\/strong> \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\uc5ec \uac01 \ubcc0\uc218 \uc30d\uc5d0 \ub300\ud55c \uc2e4\uc81c <a href=\"https:\/\/statorials.org\/ko\/\u1111\u1175\u110b\u1165\u1109\u1173\u11ab-\u1109\u1161\u11bc\u1100\u116a\u11ab-\u1100\u1168\u1109\u116e-1\/\" target=\"_blank\" rel=\"noopener noreferrer\">\uc120\ud615 \uc0c1\uad00 \uacc4\uc218\ub97c<\/a> \ud3ec\ud568\ud558\ub294 \uc720\uc0ac\ud55c \ud50c\ub86f\uc744 \ub9cc\ub4e4 \uc218\ub3c4 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<pre style=\"background-color: #e5e5e5; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#install and load the <em>GGally<\/em> library<\/span>\ninstall.packages(\"GGally\")\nlibrary(GGally)\n\n<span style=\"color: #008080;\">#generate the pairs plot\n<\/span>ggpairs(data)<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">\uac01 \uc608\uce21 \ubcc0\uc218\ub294 \uc751\ub2f5 \ubcc0\uc218 <em>mpg<\/em> \uc640 \ub208\uc5d0 \ub744\ub294 \uc120\ud615 \uc0c1\uad00 \uad00\uacc4\ub97c \uac16\ub294 \uac83\uc73c\ub85c \ub098\ud0c0\ub098\ubbc0\ub85c \uc120\ud615 \ud68c\uadc0 \ubaa8\ub378\uc744 \ub370\uc774\ud130\uc5d0 \ub9de\ucdb0 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>\ubaa8\ub378 \uc870\uc815<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">R\uc5d0\uc11c \ub2e4\uc911 \uc120\ud615 \ud68c\uadc0 \ubaa8\ub378\uc744 \ud53c\ud305\ud558\uae30 \uc704\ud55c \uae30\ubcf8 \uad6c\ubb38\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<pre style=\"background-color: #e5e5e5; font-size: 15px;\"> <strong>lm(response_variable ~ predictor_variable1 + predictor_variable2 + ..., data = data)<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">\ub370\uc774\ud130\ub97c \uc0ac\uc6a9\ud558\uc5ec \ub2e4\uc74c \ucf54\ub4dc\ub97c \uc0ac\uc6a9\ud558\uc5ec \ubaa8\ub378\uc744 \ub9de\ucd9c \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<pre style=\"background-color: #e5e5e5; font-size: 15px;\"> <strong>model &lt;- lm(mpg ~ disp + hp + drat, data = data)<\/strong><\/pre>\n<h3> <span style=\"color: #000000;\"><strong>\ubaa8\ub378 \uac00\uc815 \ud655\uc778<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">\ubaa8\ub378 \uacb0\uacfc \uac80\uc99d\uc744 \uc9c4\ud589\ud558\uae30 \uc804\uc5d0 \uba3c\uc800 \ubaa8\ub378 \uac00\uc815\uc774 \ucda9\uc871\ub418\ub294\uc9c0 \ud655\uc778\ud574\uc57c \ud569\ub2c8\ub2e4. \uc989, \ub2e4\uc74c \uc0ac\ud56d\uc744 \ud655\uc778\ud574\uc57c \ud569\ub2c8\ub2e4.<\/span><\/p>\n<p> <strong><span style=\"color: #000000;\">1. \ubaa8\ub378 \uc794\ucc28\uc758 \ubd84\ud3ec\ub294 \ub300\ub7b5 \uc815\uaddc \ubd84\ud3ec\uc5ec\uc57c \ud569\ub2c8\ub2e4.<\/span><\/strong><\/p>\n<p> <span style=\"color: #000000;\">\uac04\ub2e8\ud55c \uc794\ucc28 \ud788\uc2a4\ud1a0\uadf8\ub7a8\uc744 \ub9cc\ub4e4\uc5b4 \uc774 \uac00\uc815\uc774 \ucda9\uc871\ub418\ub294\uc9c0 \ud655\uc778\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<pre style=\"background-color: #e5e5e5; font-size: 15px;\"> <strong>hist(residuals(model), col = \"steelblue\")\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">\ubd84\ud3ec\uac00 \uc57d\uac04 <a href=\"https:\/\/statorials.org\/ko\/\u110b\u116c\u11ab\u110d\u1169\u11a8-\u1111\u1167\u11ab\u1112\u1163\u11bc-\u1103\u1162-\u110b\u1169\u1105\u1173\u11ab\u110d\u1169\u11a8-\u1111\u1167\u11ab\u1112\u1163\u11bc\/\" target=\"_blank\" rel=\"noopener\">\uc624\ub978\ucabd\uc73c\ub85c \uce58\uc6b0\uccd0 \uc788\uae30<\/a> \ub294 \ud558\uc9c0\ub9cc \ud06c\uac8c \uc6b0\ub824\ud560 \ub9cc\ud07c \uc774\uc0c1\ud558\uc9c0\ub294 \uc54a\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>2. \uc794\ucc28\uc758 \ubd84\uc0b0\uc740 \ubaa8\ub4e0 \uad00\uce21\uce58\uc5d0 \ub300\ud574 \uc77c\uad00\ub418\uc5b4\uc57c \ud569\ub2c8\ub2e4.<\/strong><\/span><\/p>\n<p> <span style=\"color: #000000;\">\uc774\ub7ec\ud55c \uc120\ud638 \uc870\uac74\uc744 \ub4f1\ubd84\uc0b0\uc131(homoscedasticity)\uc774\ub77c\uace0 \ud569\ub2c8\ub2e4. \uc774 \uac00\uc815\uc744 \uc704\ubc18\ud558\ub294 \uac83\uc744 \uc774\ubd84\uc0b0\uc131 <a href=\"https:\/\/statorials.org\/ko\/\u1110\u1169\u11bc\u1100\u1168\u1112\u1161\u11a8\u110b\u1173\u11ab-\u1100\u1161\u11ab\u1103\u1161\u11ab\u1112\u1161\u1100\u1169-\u110c\u1175\u11a8\u110c\u1165\u11b8\u110c\u1165\u11a8\u110b\u1175\u11ab-\u1107\u1161\u11bc\u1107\u1165\u11b8\u110b\u1173\u1105\u1169-\u1100\u1162\u1102\u1167\u11b7\u110b\u1173\u11af-\u1109\u1165\u11af\u1106\u1167\u11bc\u1112\u1161\u1106\u1173\u1105\u1169-\u1110\u1169\u11bc\u1100\u1168\u1105\u1173\u11af-\u1103\u1165-\u1109\u1171\u11b8\u1100\u1166-\u1107\u1162\u110b\u116e\u11af-\u1109\u116e-\u110b\u1175\u11bb\u1109\u1173\u11b8\u1102\u1175\u1103\u1161.\/\" target=\"_blank\" rel=\"noopener noreferrer\">(heteroscedasticity)<\/a> \uc774\ub77c\uace0 \ud569\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uc774 \uac00\uc815\uc774 \ucda9\uc871\ub418\ub294\uc9c0 \ud655\uc778\ud558\uae30 \uc704\ud574 <em>\uc870\uc815\/\uc794\uc874 \uac00\uce58 \uadf8\ub798\ud504\ub97c \ub9cc\ub4e4 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/em><\/span><\/p>\n<pre style=\"background-color: #e5e5e5; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create fitted value vs residual plot<\/span>\nplot(fitted(model), residuals(model))\n\n<span style=\"color: #008080;\">#add horizontal line at 0\n<\/span>abline(h = 0, lty = 2)<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">\uc774\uc0c1\uc801\uc73c\ub85c\ub294 \uc794\ucc28\uac00 \uac01 \uc801\ud569\uce58\uc5d0 \ub3d9\uc77c\ud558\uac8c \ubd84\uc0b0\ub418\uae30\ub97c \uc6d0\ud569\ub2c8\ub2e4. \uadf8\ub798\ud504\ub97c \ubcf4\uba74 \uc801\ud569\uce58\uac00 \ud074\uc218\ub85d \ubd84\uc0b0\uc774 \uc57d\uac04 \ucee4\uc9c0\ub294 \uacbd\ud5a5\uc774 \uc788\uc9c0\ub9cc \uc774\ub7ec\ud55c \ucd94\uc138\ub294 \ub108\ubb34 \uc6b0\ub824\ud560 \ub9cc\ud07c \uadf9\ub2e8\uc801\uc774\uc9c0\ub294 \uc54a\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>\ubaa8\ub378 \ucd9c\ub825 \ud574\uc11d<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">\ubaa8\ub378 \uac00\uc815\uc774 \ucda9\ubd84\ud788 \ucda9\uc871\ub418\ub294\uc9c0 \ud655\uc778\ud55c \ud6c4\uc5d0\ub294 <strong>summary()<\/strong> \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\uc5ec \ubaa8\ub378 \ucd9c\ub825\uc744 \uac80\uc0ac\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<pre style=\"background-color: #e5e5e5; font-size: 15px;\"> <strong>summary(model)\n\n#Call:\n#lm(formula = mpg ~ disp + hp + drat, data = data)\n#\n#Residuals:\n# Min 1Q Median 3Q Max \n#-5.1225 -1.8454 -0.4456 1.1342 6.4958 \n#\n#Coefficients:\n#Estimate Std. Error t value Pr(&gt;|t|)   \n#(Intercept) 19.344293 6.370882 3.036 0.00513 **\n#disp -0.019232 0.009371 -2.052 0.04960 * \n#hp -0.031229 0.013345 -2.340 0.02663 * \n#drat 2.714975 1.487366 1.825 0.07863 . \n#---\n#Significant. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1\n#\n#Residual standard error: 3.008 on 28 degrees of freedom\n#Multiple R-squared: 0.775, Adjusted R-squared: 0.7509 \n#F-statistic: 32.15 on 3 and 28 DF, p-value: 3.28e-09\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">\uacb0\uacfc\uc5d0\uc11c \uc6b0\ub9ac\ub294 \ub2e4\uc74c\uc744 \ubcfc \uc218 \uc788\uc2b5\ub2c8\ub2e4:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">\ubaa8\ub378\uc758 \uc804\uccb4 F-\ud1b5\uacc4\ub7c9\uc740 <strong>32.15<\/strong> \uc774\uace0 \ud574\ub2f9 p-\uac12\uc740 <strong>3.28e-09<\/strong> \uc785\ub2c8\ub2e4. \uc774\ub294 \uc804\uccb4 \ubaa8\ub378\uc774 \ud1b5\uacc4\uc801\uc73c\ub85c \uc720\uc758\ud558\ub2e4\ub294 \uac83\uc744 \ub098\ud0c0\ub0c5\ub2c8\ub2e4. \uc989, \ud68c\uadc0 \ubaa8\ub378\uc740 \uc804\uccb4\uc801\uc73c\ub85c \uc720\uc6a9\ud569\ub2c8\ub2e4.<\/span><\/li>\n<li> <span style=\"color: #000000;\"><em>disp<\/em> \ub294 0.10 \uc720\uc758 \uc218\uc900\uc5d0\uc11c \ud1b5\uacc4\uc801\uc73c\ub85c \uc720\uc758\ud569\ub2c8\ub2e4. \ud2b9\ud788, \ubaa8\ub378 \uacb0\uacfc\uc758 \uacc4\uc218\ub294 <em>\ub9c8\ub825<\/em> \uacfc <em>\uc5f0\ub8cc \uc18c\ube44\uac00<\/em> \uc77c\uc815\ud558\uac8c \uc720\uc9c0\ub41c\ub2e4\ub294 \uac00\uc815 \ud558\uc5d0 <em>\uac00\uc6a9\uc131\uc774<\/em> 1\ub2e8\uc704 \uc99d\uac00\ud558\uba74 <em>mpg<\/em> \uc5d0\uc11c \ud3c9\uade0 -0.019\ub2e8\uc704 \uac10\uc18c\uc640 \uc5f0\uad00\ub418\uc5b4 \uc788\uc74c\uc744 \ub098\ud0c0\ub0c5\ub2c8\ub2e4. .<\/span><\/li>\n<li> <span style=\"color: #000000;\"><em>hp<\/em> \ub294 0.10 \uc720\uc758\uc218\uc900\uc5d0\uc11c \ud1b5\uacc4\uc801\uc73c\ub85c \uc720\uc758\ud569\ub2c8\ub2e4. \ud2b9\ud788, \ubaa8\ub378 \uacb0\uacfc\uc758 \uacc4\uc218\ub294 <i>disp<\/i> \uc640 <em>drat\uac00<\/em> \uc77c\uc815\ud558\uac8c \uc720\uc9c0\ub41c\ub2e4\uace0 \uac00\uc815\ud560 \ub54c <i>\ub9c8\ub825\uc774<\/i> 1\ub2e8\uc704 \uc99d\uac00\ud558\uba74 <em>mpg<\/em> \uc5d0\uc11c \ud3c9\uade0 -0.031\ub2e8\uc704 \uac10\uc18c\uc640 \uc5f0\uad00\ub418\uc5b4 \uc788\uc74c\uc744 \ub098\ud0c0\ub0c5\ub2c8\ub2e4.<\/span><\/li>\n<li> <span style=\"color: #000000;\"><em>drat<\/em> \ub294 0.10 \uc720\uc758 \uc218\uc900\uc5d0\uc11c \ud1b5\uacc4\uc801\uc73c\ub85c \uc720\uc758\ud569\ub2c8\ub2e4. \ud2b9\ud788, \ubaa8\ub378 \uacb0\uacfc\uc758 \uacc4\uc218\ub294 <i>\uc720\uc18d\uacfc<\/i> <i>\ub9c8\ub825<\/i> \uc774 \uc77c\uc815\ud558\uac8c \uc720\uc9c0\ub41c\ub2e4\uace0 \uac00\uc815\ud560 \ub54c <i>\ud718\ubc1c\uc720 \uc18c\ube44\uac00<\/i> 1\ub2e8\uc704 \uc99d\uac00\ud558\uba74 \ud3c9\uade0 2,715\ub2e8\uc704 <em>mpg<\/em> \uc99d\uac00\uc640 \uc5f0\uad00\ub418\uc5b4 \uc788\uc74c\uc744 \ub098\ud0c0\ub0c5\ub2c8\ub2e4.<\/span><\/li>\n<\/ul>\n<h3> <span style=\"color: #000000;\"><strong>\ubaa8\ub378 \uc801\ud569\ub3c4 \ud3c9\uac00<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">\ud68c\uadc0 \ubaa8\ub378\uc774 \ub370\uc774\ud130\uc5d0 \uc5bc\ub9c8\ub098 \uc798 \ub9de\ub294\uc9c0 \ud3c9\uac00\ud558\uae30 \uc704\ud574 \uba87 \uac00\uc9c0 \uce21\uc815\ud56d\ubaa9\uc744 \uc0b4\ud3b4\ubcfc \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<p> <strong><span style=\"color: #000000;\">1. \ub2e4\uc911 R-\uc81c\uacf1<\/span><\/strong><\/p>\n<p> <span style=\"color: #000000;\">\uc774\ub294 \uc608\uce21 \ubcc0\uc218\uc640 \ubc18\uc751 \ubcc0\uc218 \uac04\uc758 \uc120\ud615 \uad00\uacc4\uc758 \uac15\ub3c4\ub97c \uce21\uc815\ud569\ub2c8\ub2e4. R \uc81c\uacf1 \ubc30\uc218 1\uc740 \uc644\ubcbd\ud55c \uc120\ud615 \uad00\uacc4\ub97c \ub098\ud0c0\ub0b4\uace0, R \uc81c\uacf1 \ubc30\uc218 0\uc740 \uc120\ud615 \uad00\uacc4\uac00 \uc5c6\uc74c\uc744 \ub098\ud0c0\ub0c5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\ub2e4\uc911 R\uc740 \uc608\uce21 \ubcc0\uc218\ub85c \uc124\uba85\ud560 \uc218 \uc788\ub294 \ubc18\uc751 \ubcc0\uc218\uc758 \ubd84\uc0b0 \ube44\uc728\uc778 R \uc81c\uacf1\uc758 \uc81c\uacf1\uadfc\uc774\uae30\ub3c4 \ud569\ub2c8\ub2e4. \uc774 \uc608\uc5d0\uc11c R \uc81c\uacf1 \ubc30\uc218\ub294 <strong>0.775<\/strong> \uc785\ub2c8\ub2e4. \ub530\ub77c\uc11c R \uc81c\uacf1\uc740 0.775 <sup>2<\/sup> = <strong>0.601<\/strong> \uc785\ub2c8\ub2e4. \uc774\ub294 <i>mpg<\/i> \uc758 \ubd84\uc0b0 \uc911 <strong>60.1%<\/strong> \uac00 \ubaa8\ub378 \uc608\uce21 \ubcc0\uc218\uc5d0 \uc758\ud574 \uc124\uba85\ub420 \uc218 \uc788\uc74c\uc744 \ub098\ud0c0\ub0c5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>\uad00\ub828 \ud56d\ubaa9:<\/strong> <a href=\"https:\/\/statorials.org\/ko\/\u1110\u1169\u11bc\u1100\u1168\u1112\u1161\u11a8\u110b\u1173\u11ab-\u1100\u1161\u11ab\u1103\u1161\u11ab\u1112\u1161\u1100\u1169-\u110c\u1175\u11a8\u110c\u1165\u11b8\u110c\u1165\u11a8\u110b\u1175\u11ab-\u1107\u1161\u11bc\u1107\u1165\u11b8\u110b\u1173\u1105\u1169-\u1100\u1162\u1102\u1167\u11b7\u110b\u1173\u11af-\u1109\u1165\u11af\u1106\u1167\u11bc\u1112\u1161\u1106\u1173\u1105\u1169-\u1110\u1169\u11bc\u1100\u1168\u1105\u1173\u11af-\u1103\u1165-\u1109\u1171\u11b8\u1100\u1166-\u1107\u1162\u110b\u116e\u11af-\u1109\u116e-\u110b\u1175\u11bb\u1109\u1173\u11b8\u1102\u1175\u1103\u1161.\/\" target=\"_blank\" rel=\"noopener noreferrer\">\uc88b\uc740 R \uc81c\uacf1 \uac12\uc774\ub780 \ubb34\uc5c7\uc785\ub2c8\uae4c?<\/a><\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>2. \uc794\uc5ec \ud45c\uc900 \uc624\ucc28<\/strong><\/span><\/p>\n<p> <span style=\"color: #000000;\">\uc774\ub294 \uad00\ucc30\ub41c \uac12\uacfc \ud68c\uadc0\uc120 \uc0ac\uc774\uc758 \ud3c9\uade0 \uac70\ub9ac\ub97c \uce21\uc815\ud569\ub2c8\ub2e4. \uc774 \uc608\uc5d0\uc11c \uad00\ucc30\ub41c \uac12\uc740 \ud68c\uadc0\uc120\uc5d0\uc11c \ud3c9\uade0 <strong>3.008 \ub2e8\uc704<\/strong> \ub9cc\ud07c \ubc97\uc5b4\ub0a9\ub2c8\ub2e4 <strong>.<\/strong><\/span><\/p>\n<p> <strong><span style=\"color: #000000;\">\uad00\ub828\ub41c:<\/span><\/strong> <span style=\"color: #000000;\">&nbsp;<\/span> <a href=\"https:\/\/statorials.org\/ko\/\u1110\u1169\u11bc\u1100\u1168\u1112\u1161\u11a8\u110b\u1173\u11ab-\u1100\u1161\u11ab\u1103\u1161\u11ab\u1112\u1161\u1100\u1169-\u110c\u1175\u11a8\u110c\u1165\u11b8\u110c\u1165\u11a8\u110b\u1175\u11ab-\u1107\u1161\u11bc\u1107\u1165\u11b8\u110b\u1173\u1105\u1169-\u1100\u1162\u1102\u1167\u11b7\u110b\u1173\u11af-\u1109\u1165\u11af\u1106\u1167\u11bc\u1112\u1161\u1106\u1173\u1105\u1169-\u1110\u1169\u11bc\u1100\u1168\u1105\u1173\u11af-\u1103\u1165-\u1109\u1171\u11b8\u1100\u1166-\u1107\u1162\u110b\u116e\u11af-\u1109\u116e-\u110b\u1175\u11bb\u1109\u1173\u11b8\u1102\u1175\u1103\u1161.\/\" target=\"_blank\" rel=\"noopener noreferrer\">\ud68c\uadc0\uc758 \ud45c\uc900 \uc624\ub958 \uc774\ud574<\/a><\/p>\n<h3> <span style=\"color: #000000;\"><strong>\ubaa8\ub378\uc744 \uc0ac\uc6a9\ud558\uc5ec \uc608\uce21\ud558\uae30<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">\ubaa8\ub378 \uacb0\uacfc\ub97c \ud1b5\ud574 \uc801\ud569 \ub2e4\uc911 \uc120\ud615 \ud68c\uadc0 \ubc29\uc815\uc2dd\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<p style=\"text-align: left;\"> <span style=\"color: #000000;\"><sub>\ubaa8\uc790<\/sub> mpg = -19.343 \u2013 0.019*disp \u2013 0.031*hp + 2.715*drat<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uc6b0\ub9ac\ub294 \uc774 \ubc29\uc815\uc2dd\uc744 \uc0ac\uc6a9\ud558\uc5ec \uc0c8\ub85c\uc6b4 <a href=\"https:\/\/statorials.org\/ko\/\u1110\u1169\u11bc\u1100\u1168\u110b\u1166\u1109\u1165\u110b\u1174-\u1100\u116a\u11ab\u110e\u1161\u11af\/\" target=\"_blank\" rel=\"noopener\">\uad00\ucc30<\/a> \uc5d0 \ub300\ud55c <em>mpg\uac00<\/em> \ubb34\uc5c7\uc778\uc9c0 \uc608\uce21\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \ub2e4\uc74c \uc18d\uc131\uc744 \uac00\uc9c4 \uc790\ub3d9\ucc28\uc758 \uc608\uc0c1 <em>mpg<\/em> \uac12\uc744 \ucc3e\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><em>\ub514\uc2a4\ud50c\ub808\uc774<\/em> = 220<\/span><\/li>\n<li> <span style=\"color: #000000;\"><em>\ucc44\ub110<\/em> = 150<\/span><\/li>\n<li> <span style=\"color: #000000;\"><em>\ucd08\uc548<\/em> = 3<\/span><\/li>\n<\/ul>\n<pre style=\"background-color: #e5e5e5; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#define the coefficients from the model output<\/span>\nintercept &lt;- coef(summary(model))[\"(Intercept)\", \"Estimate\"]\ndisp &lt;- coef(summary(model))[\"disp\", \"Estimate\"]\nhp &lt;- coef(summary(model))[\"hp\", \"Estimate\"]\ndrat &lt;- coef(summary(model))[\"drat\", \"Estimate\"]\n\n<span style=\"color: #008080;\">#use the model coefficients to predict the value for <em>mpg<\/em>\n<\/span>intercept + disp*220 + hp*150 + drat*3\n\n#[1] 18.57373<\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><em>disp<\/em> = 220, <em>hp<\/em> = 150, <em>drat<\/em> = 3\uc778 \uc790\ub3d9\ucc28\uc758 \uacbd\uc6b0 \ubaa8\ub378\uc740 \uc790\ub3d9\ucc28\uc758 \uc5f0\ube44\uac00 <strong>18.57373mpg<\/strong> <em>\uac00<\/em> \ub420 \uac83\uc73c\ub85c \uc608\uce21\ud569\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><em>\uc774 \ud29c\ud1a0\ub9ac\uc5bc\uc5d0\uc11c \uc0ac\uc6a9\ub41c \uc804\uccb4 R \ucf54\ub4dc\ub294 <a href=\"https:\/\/github.com\/Statorials\/R-Guides\/blob\/main\/multiple_linear_regression.R\" target=\"_blank\" rel=\"noopener noreferrer\">\uc5ec\uae30\uc5d0\uc11c<\/a> \ucc3e\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/em><\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>\ucd94\uac00 \ub9ac\uc18c\uc2a4<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c \ud29c\ud1a0\ub9ac\uc5bc\uc5d0\uc11c\ub294 R\uc5d0\uc11c \ub2e4\ub978 \uc720\ud615\uc758 \ud68c\uadc0 \ubaa8\ub378\uc744 \ub9de\ucd94\ub294 \ubc29\ubc95\uc744 \uc124\uba85\ud569\ub2c8\ub2e4.<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/ko\/2\u110e\u1161-\u1112\u116c\u1100\u1171-r\/\" target=\"_blank\" rel=\"noopener\">R\uc5d0\uc11c 2\ucc28 \ud68c\uadc0\ub97c \uc218\ud589\ud558\ub294 \ubc29\ubc95<\/a><br \/> <a href=\"https:\/\/statorials.org\/ko\/\u1103\u1161\u1112\u1161\u11bc\u1109\u1175\u11a8-\u1112\u116c\u1100\u1171-r\/\" target=\"_blank\" rel=\"noopener\">R\uc5d0\uc11c \ub2e4\ud56d\uc2dd \ud68c\uadc0\ub97c \uc218\ud589\ud558\ub294 \ubc29\ubc95<\/a><br \/> <a href=\"https:\/\/statorials.org\/ko\/r\u110b\u1174-\u110c\u1175\u1109\u116e-\u1112\u116c\u1100\u1171\/\">R\uc5d0\uc11c \uc9c0\uc218 \ud68c\uadc0\ub97c \uc218\ud589\ud558\ub294 \ubc29\ubc95<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\uc774 \uac00\uc774\ub4dc\uc5d0\uc11c\ub294 \ub2e4\uc74c\uc744 \ud3ec\ud568\ud558\uc5ec R\uc5d0\uc11c \ub2e4\uc911 \uc120\ud615 \ud68c\uadc0\ub97c \uc218\ud589\ud558\ub294 \ubc29\ubc95\uc758 \uc608\ub97c \ubcf4\uc5ec\uc90d\ub2c8\ub2e4. \ubaa8\ub378\uc744 \ud53c\ud305\ud558\uae30 \uc804\uc5d0 \ub370\uc774\ud130 \uac80\uc0ac \ubaa8\ub378 \uc870\uc815 \ubaa8\ub378 \uac00\uc815 \ud655\uc778 \ubaa8\ub378 \ucd9c\ub825 \ud574\uc11d \ubaa8\ub378 \uc801\ud569\ub3c4 \ud3c9\uac00 \ubaa8\ub378\uc744 \uc0ac\uc6a9\ud558\uc5ec \uc608\uce21\ud558\uae30 \uac11\uc2dc\ub2e4! \uc2dc\uc124 \uc774 \uc608\uc5d0\uc11c\ub294 32\uac00\uc9c0 \uc790\ub3d9\ucc28\uc758 \ub2e4\uc591\ud55c \uc18d\uc131\uc5d0 \ub300\ud55c \uc815\ubcf4\uac00 \ud3ec\ud568\ub41c \ub0b4\uc7a5 R \ub370\uc774\ud130 \uc138\ud2b8 mtcars\ub97c \uc0ac\uc6a9\ud569\ub2c8\ub2e4. #view first six lines of mtcars head(mtcars) [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[],"class_list":["post-504","post","type-post","status-publish","format-standard","hentry","category-20"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>R\uc5d0\uc11c \ub2e4\uc911 \uc120\ud615 \ud68c\uadc0\ub97c \uc218\ud589\ud558\ub294 \ubc29\ubc95 - 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