{"id":1532,"date":"2023-07-25T23:59:19","date_gmt":"2023-07-25T23:59:19","guid":{"rendered":"https:\/\/statorials.org\/ko\/%e1%84%8b%e1%85%b3%e1%86%b7%e1%84%8b%e1%85%b5%e1%84%92%e1%85%a1%e1%86%bc-%e1%84%83%e1%85%a2-%e1%84%86%e1%85%ae%e1%86%af%e1%84%80%e1%85%a9%e1%84%80%e1%85%b5\/"},"modified":"2023-07-25T23:59:19","modified_gmt":"2023-07-25T23:59:19","slug":"%e1%84%8b%e1%85%b3%e1%86%b7%e1%84%8b%e1%85%b5%e1%84%92%e1%85%a1%e1%86%bc-%e1%84%83%e1%85%a2-%e1%84%86%e1%85%ae%e1%86%af%e1%84%80%e1%85%a9%e1%84%80%e1%85%b5","status":"publish","type":"post","link":"https:\/\/statorials.org\/ko\/%e1%84%8b%e1%85%b3%e1%86%b7%e1%84%8b%e1%85%b5%e1%84%92%e1%85%a1%e1%86%bc-%e1%84%83%e1%85%a2-%e1%84%86%e1%85%ae%e1%86%af%e1%84%80%e1%85%a9%e1%84%80%e1%85%b5\/","title":{"rendered":"\uc74c\uc774\ud56d vs \ud3ec\uc544\uc1a1: \ud68c\uadc0 \ubaa8\ub378\uc744 \uc120\ud0dd\ud558\ub294 \ubc29\ubc95"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\"><strong>\uc74c\uc774\ud56d \ud68c\uadc0<\/strong> \uc640 <strong>\ud3ec\uc544\uc1a1 \ud68c\uadc0\ub294<\/strong> <a href=\"https:\/\/statorials.org\/ko\/\u1107\u1167\u11ab\u1109\u116e-\u1109\u1165\u11af\u1106\u1167\u11bc-\u110b\u1173\u11bc\u1103\u1161\u11b8\/\" target=\"_blank\" rel=\"noopener\">\ubc18\uc751 \ubcc0\uc218\uac00<\/a> \uc774\uc0b0 \uac1c\uc218 \uacb0\uacfc\ub85c \ud45c\uc2dc\ub420 \ub54c \uc0ac\uc6a9\ud574\uc57c \ud558\ub294 \ub450 \uac00\uc9c0 \uc720\ud615\uc758 \ud68c\uadc0 \ubaa8\ub378\uc785\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c\uc740 \uc774\uc0b0 \uacc4\uc0b0 \uacb0\uacfc\ub97c \ub098\ud0c0\ub0b4\ub294 \ubc18\uc751 \ubcc0\uc218\uc758 \uba87 \uac00\uc9c0 \uc608\uc785\ub2c8\ub2e4.<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">\ud2b9\uc815 \ud504\ub85c\uadf8\ub7a8\uc744 \uc878\uc5c5\ud558\ub294 \ud559\uc0dd \uc218<\/span><\/li>\n<li> <span style=\"color: #000000;\">\ud2b9\uc815 \uad50\ucc28\ub85c\uc5d0\uc11c\uc758 \uad50\ud1b5\uc0ac\uace0 \uac74\uc218<\/span><\/li>\n<li> <span style=\"color: #000000;\">\ub9c8\ub77c\ud1a4\uc744 \uc644\uc8fc\ud55c \ucc38\uac00\uc790 \uc218<\/span><\/li>\n<li> <span style=\"color: #000000;\">\ud2b9\uc815 \ub2ec\uc5d0 \uc18c\ub9e4\uc810\uc5d0\uc11c \ubc18\ud488\ud55c \ud69f\uc218<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">\ubd84\uc0b0\uc774 \ud3c9\uade0\uacfc \uac70\uc758 \uac19\uc73c\uba74 \ud3ec\uc544\uc1a1 \ud68c\uadc0 \ubaa8\ub378\uc740 \uc77c\ubc18\uc801\uc73c\ub85c \ub370\uc774\ud130 \uc138\ud2b8\uc5d0 \uc798 \ub9de\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uadf8\ub7ec\ub098 \ubd84\uc0b0\uc774 \ud3c9\uade0\ubcf4\ub2e4 \ud6e8\uc52c \ud070 \uacbd\uc6b0 \uc77c\ubc18\uc801\uc73c\ub85c \uc74c\uc774\ud56d \ud68c\uadc0 \ubaa8\ub378\uc774 \ub370\uc774\ud130\ub97c \ub354 \uc798 \uc801\ud569\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uc8fc\uc5b4\uc9c4 \ub370\uc774\ud130 \uc138\ud2b8\uc5d0 \ub300\ud574 \ud3ec\uc544\uc1a1 \ud68c\uadc0 \ub610\ub294 \uc74c\uc774\ud56d \ud68c\uadc0\uac00 \ub354 \uc801\ud569\ud55c\uc9c0 \uc5ec\ubd80\ub97c \uacb0\uc815\ud558\ub294 \ub370 \uc0ac\uc6a9\ud560 \uc218 \uc788\ub294 \ub450 \uac00\uc9c0 \uae30\uc220\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>1. \uc794\ucc28 \ud50c\ub86f<\/strong><\/span><\/p>\n<p> <span style=\"color: #000000;\">\ud68c\uadc0 \ubaa8\ub378\uc758 \uc608\uce21 \uac12\uc5d0 \ub300\ud574 \ud45c\uc900\ud654\ub41c \uc794\ucc28\uc758 \ud50c\ub86f\uc744 \ub9cc\ub4e4 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\ud45c\uc900\ud654\ub41c \uc794\ucc28\uc758 \ub300\ubd80\ubd84\uc774 -2\uc640 2 \uc0ac\uc774\uc5d0 \uc788\uc73c\uba74 \ud3ec\uc544\uc1a1 \ud68c\uadc0 \ubaa8\ub378\uc774 \uc801\uc808\ud560 \uac83\uc785\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uadf8\ub7ec\ub098 \ub9ce\uc740 \uc794\ucc28\uac00 \uc774 \ubc94\uc704\ub97c \ubc97\uc5b4\ub098\uba74 \uc74c\uc774\ud56d \ud68c\uadc0 \ubaa8\ub378\uc774 \ub354 \ub098\uc740 \uc801\ud569\uce58\ub97c \uc81c\uacf5\ud560 \uac00\ub2a5\uc131\uc774 \ub192\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>2. \uc6b0\ub3c4\ube44 \uac80\uc815<\/strong><\/span><\/p>\n<p> <span style=\"color: #000000;\">\ud3ec\uc544\uc1a1 \ud68c\uadc0 \ubaa8\ub378\uacfc \uc74c\uc774\ud56d \ud68c\uadc0 \ubaa8\ub378\uc744 \ub3d9\uc77c\ud55c \ub370\uc774\ud130 \uc138\ud2b8\uc5d0 \uc801\uc6a9\ud55c \ub2e4\uc74c \uc6b0\ub3c4 \ube44\uc728 \ud14c\uc2a4\ud2b8\ub97c \uc218\ud589\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\ud14c\uc2a4\ud2b8\uc758 p-\uac12\uc774 \ud2b9\uc815 \uc720\uc758 \uc218\uc900(\uc608: 0.05)\ubcf4\ub2e4 \ub0ae\uc73c\uba74 \uc74c\uc774\ud56d \ud68c\uadc0 \ubaa8\ub378\uc774 \ud6e8\uc52c \ub354 \ub098\uc740 \uc801\ud569\uc131\uc744 \uc81c\uacf5\ud55c\ub2e4\uace0 \uacb0\ub860\uc744 \ub0b4\ub9b4 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c \uc608\uc5d0\uc11c\ub294 R\uc5d0\uc11c \uc774\ub7ec\ud55c \ub450 \uae30\uc220\uc744 \uc0ac\uc6a9\ud558\uc5ec \uc8fc\uc5b4\uc9c4 \ub370\uc774\ud130 \uc138\ud2b8\uc5d0 \ub300\ud574 \ud3ec\uc544\uc1a1 \ud68c\uadc0 \ubaa8\ub378\uc744 \uc0ac\uc6a9\ud558\ub294 \uac83\uc774 \ub354 \ub098\uc740\uc9c0 \uc74c\uc774\ud56d \ud68c\uadc0 \ubaa8\ub378\uc744 \uc0ac\uc6a9\ud558\ub294 \uac83\uc774 \ub354 \ub098\uc740\uc9c0 \uacb0\uc815\ud558\ub294 \ubc29\ubc95\uc744 \ubcf4\uc5ec\uc90d\ub2c8\ub2e4.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>\uc608: \uc74c\uc774\ud56d \ud68c\uadc0\uc640 \ud3ec\uc544\uc1a1 \ud68c\uadc0<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">\ud2b9\uc815 \uce74\uc6b4\ud2f0\uc758 \uace0\ub4f1\ud559\uad50 \uc57c\uad6c \uc120\uc218\uac00 \uadf8\uc758 \ud559\uad50 \ubd80\ubb38(&#8220;A&#8221;, &#8220;B&#8221; \ub610\ub294 &#8220;C&#8221;)\uacfc \ud559\uad50 \uc131\uc801\uc744 \uae30\uc900\uc73c\ub85c \uc5bc\ub9c8\ub098 \ub9ce\uc740 \uc7a5\ud559\uae08\uc744 \ubc1b\ub294\uc9c0 \uc54c\uace0 \uc2f6\ub2e4\uace0 \uac00\uc815\ud574 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4. \ub300\ud559 \uc785\ud559 \uc2dc\ud5d8(0\uc5d0\uc11c 100\uae4c\uc9c0 \uce21\uc815). ).<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uc74c\uc774\ud56d \ud68c\uadc0 \ubaa8\ub378 \ub610\ub294 \ud3ec\uc544\uc1a1 \ud68c\uadc0 \ubaa8\ub378\uc774 \ub370\uc774\ud130\uc5d0 \ub354 \ub098\uc740 \uc801\ud569\uc131\uc744 \uc81c\uacf5\ud558\ub294\uc9c0 \ud655\uc778\ud558\ub824\uba74 \ub2e4\uc74c \ub2e8\uacc4\ub97c \uc0ac\uc6a9\ud558\uc2ed\uc2dc\uc624.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>1\ub2e8\uacc4: \ub370\uc774\ud130 \uc0dd\uc131<\/strong><\/span><\/p>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c \ucf54\ub4dc\ub294 1,000\uba85\uc758 \uc57c\uad6c \uc120\uc218\uc5d0 \ub300\ud55c \ub370\uc774\ud130\uac00 \ud3ec\ud568\ub41c \ub370\uc774\ud130 \uc138\ud2b8\ub97c \uc0dd\uc131\ud569\ub2c8\ub2e4.<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#make this example reproducible\n<\/span>set. <span style=\"color: #3366ff;\">seeds<\/span> (1)\n\n<span style=\"color: #008080;\">#create dataset\n<\/span>data &lt;- data. <span style=\"color: #3366ff;\">frame<\/span> (offers = c(rep(0, 700), rep(1, 100), rep(2, 100),\n                              rep(3, 70), rep(4, 30)),\n                   division = sample(c(' <span style=\"color: #008000;\">A<\/span> ', ' <span style=\"color: #008000;\">B<\/span> ', ' <span style=\"color: #008000;\">C<\/span> '), 100, replace = <span style=\"color: #008000;\">TRUE<\/span> ),\n                   exam = c(runif(700, 60, 90), runif(100, 65, 95),\n                            runif(200, 75, 95)))\n\n<span style=\"color: #008080;\">#view first six rows of dataset\n<\/span>head(data)\n\n  offers division exam\n1 0 A 66.22635\n2 0 C 66.85974\n3 0 A 77.87136\n4 0 B 77.24617\n5 0 A 62.31193\n6 0 C 61.06622<\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><strong>2\ub2e8\uacc4: \ud3ec\uc544\uc1a1 \ud68c\uadc0 \ubaa8\ub378\uacfc \uc74c\uc774\ud56d \ud68c\uadc0 \ubaa8\ub378 \ud53c\ud305<\/strong><\/span><\/p>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c \ucf54\ub4dc\ub294 \ud3ec\uc544\uc1a1 \ud68c\uadc0 \ubaa8\ub378\uacfc \uc74c\uc774\ud56d \ud68c\uadc0 \ubaa8\ub378\uc744 \ubaa8\ub450 \ub370\uc774\ud130\uc5d0 \ub9de\ucd94\ub294 \ubc29\ubc95\uc744 \ubcf4\uc5ec\uc90d\ub2c8\ub2e4.<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#fit Poisson regression model\n<\/span>p_model &lt;- glm(offers ~ division + exam, family = ' <span style=\"color: #008000;\">fish<\/span> ', data = data)\n\n<span style=\"color: #008080;\">#fit negative binomial regression model\n<\/span><span style=\"color: #993300;\">library<\/span> (MASS)\n\nnb_model &lt;- glm. <span style=\"color: #3366ff;\">nb<\/span> (offers ~ division + exam, data = data)\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><strong>3\ub2e8\uacc4: \uc794\ucc28 \ub3c4\ud45c \uc0dd\uc131<\/strong><\/span><\/p>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c \ucf54\ub4dc\ub294 \ub450 \ubaa8\ub378 \ubaa8\ub450\uc5d0 \ub300\ud55c \uc794\ucc28 \uadf8\ub9bc\uc744 \uc0dd\uc131\ud558\ub294 \ubc29\ubc95\uc744 \ubcf4\uc5ec\uc90d\ub2c8\ub2e4.<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#Residual plot for Poisson regression\n<\/span>p_res &lt;- <span style=\"color: #3366ff;\">resid<\/span> (p_model)\nplot(fitted(p_model), p_res, col=' <span style=\"color: #008000;\">steelblue<\/span> ', pch=16,\n     xlab=' <span style=\"color: #008000;\">Predicted Offers<\/span> ', ylab=' <span style=\"color: #008000;\">Standardized Residuals<\/span> ', main=' <span style=\"color: #008000;\">Poisson<\/span> ')\nabline(0,0)\n\n<span style=\"color: #008080;\">#Residual plot for negative binomial regression<\/span>\nnb_res &lt;- <span style=\"color: #3366ff;\">resid<\/span> (nb_model)\nplot(fitted(nb_model), nb_res, col=' <span style=\"color: #008000;\">steelblue<\/span> ', pch=16,\n     xlab=' <span style=\"color: #008000;\">Predicted Offers<\/span> ', ylab=' <span style=\"color: #008000;\">Standardized Residuals<\/span> ', main=' <span style=\"color: #008000;\">Negative Binomial<\/span> ')\nabline(0,0)<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-15231 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/negatifbinom1.png\" alt=\"\uc74c\uc774\ud56d vs \ud3ec\uc544\uc1a1 \ud68c\uadc0\" width=\"679\" height=\"327\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">\uadf8\ub798\ud504\uc5d0\uc11c \uc74c\uc774\ud56d \ud68c\uadc0 \ubaa8\ub378\uc5d0 \ube44\ud574 \ud3ec\uc544\uc1a1 \ud68c\uadc0 \ubaa8\ub378(\uc77c\ubd80 \uc794\ucc28\ub294 3 \uc774\uc0c1\uc73c\ub85c \ud655\uc7a5\ub428)\uc758 \uacbd\uc6b0 \uc794\ucc28\uac00 \ub354 \ub9ce\uc774 \ubd84\uc0b0\ub418\uc5b4 \uc788\uc74c\uc744 \uc54c \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uc774\ub294 \uc774 \ubaa8\ub378\uc758 \uc794\ucc28\uac00 \ub354 \uc791\uae30 \ub54c\ubb38\uc5d0 \uc74c\uc774\ud56d \ud68c\uadc0 \ubaa8\ub378\uc774 \ub354 \uc801\ud569\ud560 \uc218 \uc788\ub2e4\ub294 \uc2e0\ud638\uc785\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>4\ub2e8\uacc4: \uc6b0\ub3c4\ube44 \ud14c\uc2a4\ud2b8 \uc218\ud589<\/strong><\/span><\/p>\n<p> <span style=\"color: #000000;\">\ub9c8\uc9c0\ub9c9\uc73c\ub85c \uc6b0\ub3c4\ube44 \ud14c\uc2a4\ud2b8\ub97c \uc218\ud589\ud558\uc5ec \ub450 \ud68c\uadc0 \ubaa8\ub378\uc758 \uc801\ud569\ub3c4\uc5d0 \ud1b5\uacc4\uc801\uc73c\ub85c \uc720\uc758\ubbf8\ud55c \ucc28\uc774\uac00 \uc788\ub294\uc9c0 \ud655\uc778\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>pchisq(2 * ( <span style=\"color: #3366ff;\">logLik<\/span> (nb_model) - <span style=\"color: #3366ff;\">logLik<\/span> (p_model)), df = 1, lower. <span style=\"color: #3366ff;\">tail<\/span> = <span style=\"color: #008000;\">FALSE<\/span> )\n\n'log Lik.' 3.508072e-29 (df=5)\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">\ud14c\uc2a4\ud2b8\uc758 p-\uac12\uc740 <strong>3.508072e-29<\/strong> \ub85c \ubc1d\ud600\uc84c\uc73c\uba70 \uc774\ub294 0.05\ubcf4\ub2e4 \ud6e8\uc52c \uc791\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\ub530\ub77c\uc11c \uc6b0\ub9ac\ub294 \uc74c\uc774\ud56d \ud68c\uadc0 \ubaa8\ub378\uc774 \ud3ec\uc544\uc1a1 \ud68c\uadc0 \ubaa8\ub378\uc5d0 \ube44\ud574 \ub370\uc774\ud130\uc5d0 \ud6e8\uc52c \ub354 \uc798 \ub9de\ub294\ub2e4\ub294 \uacb0\ub860\uc744 \ub0b4\ub9b4 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>\ucd94\uac00 \ub9ac\uc18c\uc2a4<\/strong><\/span><\/h3>\n<p> <a href=\"https:\/\/statorials.org\/ko\/\u110b\u1173\u11b7\u1109\u116e-1-\u110b\u1175\u1112\u1161\u11bc-\u1107\u116e\u11ab\u1111\u1169\/\" target=\"_blank\" rel=\"noopener\">\uc74c\uc774\ud56d \ubd84\ud3ec \uc18c\uac1c<\/a><br \/> <a href=\"https:\/\/statorials.org\/ko\/\u1106\u116e\u11af\u1100\u1169\u1100\u1175\u110b\u1174-\u110b\u1172\u1110\u1169\u11bc\/\" target=\"_blank\" rel=\"noopener\">\ud3ec\uc544\uc1a1 \ubd84\ud3ec \uc18c\uac1c<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\uc74c\uc774\ud56d \ud68c\uadc0 \uc640 \ud3ec\uc544\uc1a1 \ud68c\uadc0\ub294 \ubc18\uc751 \ubcc0\uc218\uac00 \uc774\uc0b0 \uac1c\uc218 \uacb0\uacfc\ub85c \ud45c\uc2dc\ub420 \ub54c \uc0ac\uc6a9\ud574\uc57c \ud558\ub294 \ub450 \uac00\uc9c0 \uc720\ud615\uc758 \ud68c\uadc0 \ubaa8\ub378\uc785\ub2c8\ub2e4. \ub2e4\uc74c\uc740 \uc774\uc0b0 \uacc4\uc0b0 \uacb0\uacfc\ub97c \ub098\ud0c0\ub0b4\ub294 \ubc18\uc751 \ubcc0\uc218\uc758 \uba87 \uac00\uc9c0 \uc608\uc785\ub2c8\ub2e4. \ud2b9\uc815 \ud504\ub85c\uadf8\ub7a8\uc744 \uc878\uc5c5\ud558\ub294 \ud559\uc0dd \uc218 \ud2b9\uc815 \uad50\ucc28\ub85c\uc5d0\uc11c\uc758 \uad50\ud1b5\uc0ac\uace0 \uac74\uc218 \ub9c8\ub77c\ud1a4\uc744 \uc644\uc8fc\ud55c \ucc38\uac00\uc790 \uc218 \ud2b9\uc815 \ub2ec\uc5d0 \uc18c\ub9e4\uc810\uc5d0\uc11c \ubc18\ud488\ud55c \ud69f\uc218 \ubd84\uc0b0\uc774 \ud3c9\uade0\uacfc \uac70\uc758 \uac19\uc73c\uba74 \ud3ec\uc544\uc1a1 \ud68c\uadc0 \ubaa8\ub378\uc740 \uc77c\ubc18\uc801\uc73c\ub85c [&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-1532","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>\uc74c\uc774\ud56d vs 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