{"id":490,"date":"2023-07-29T17:48:18","date_gmt":"2023-07-29T17:48:18","guid":{"rendered":"https:\/\/statorials.org\/my\/%e1%80%90%e1%80%85%e1%80%ba%e1%80%86%e1%80%84%e1%80%b7%e1%80%ba%e1%80%95%e1%80%bc%e1%80%ae%e1%80%b8%e1%80%90%e1%80%85%e1%80%ba%e1%80%86%e1%80%84%e1%80%b7%e1%80%ba-%e1%80%86%e1%80%af%e1%80%90%e1%80%ba\/"},"modified":"2023-07-29T17:48:18","modified_gmt":"2023-07-29T17:48:18","slug":"%e1%80%90%e1%80%85%e1%80%ba%e1%80%86%e1%80%84%e1%80%b7%e1%80%ba%e1%80%95%e1%80%bc%e1%80%ae%e1%80%b8%e1%80%90%e1%80%85%e1%80%ba%e1%80%86%e1%80%84%e1%80%b7%e1%80%ba-%e1%80%86%e1%80%af%e1%80%90%e1%80%ba","status":"publish","type":"post","link":"https:\/\/statorials.org\/my\/%e1%80%90%e1%80%85%e1%80%ba%e1%80%86%e1%80%84%e1%80%b7%e1%80%ba%e1%80%95%e1%80%bc%e1%80%ae%e1%80%b8%e1%80%90%e1%80%85%e1%80%ba%e1%80%86%e1%80%84%e1%80%b7%e1%80%ba-%e1%80%86%e1%80%af%e1%80%90%e1%80%ba\/","title":{"rendered":"R \u1010\u103d\u1004\u103a \u1021\u1006\u1004\u1037\u103a\u1006\u1004\u1037\u103a \u1006\u102f\u1010\u103a\u101a\u102f\u1010\u103a\u1019\u103e\u102f\u1006\u102d\u102f\u1004\u103a\u101b\u102c \u101c\u1019\u103a\u1038\u100a\u103d\u103e\u1014\u103a\u1001\u103b\u1000\u103a\u1021\u1015\u103c\u100a\u1037\u103a\u1021\u1005\u102f\u1036"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\"><a href=\"https:\/\/statorials.org\/my\/\u1021\u1006\u1004\u1037\u103a\u1006\u1004\u1037\u103a\u101b\u103d\u1031\u1038\u1001\u103b\u101a\u103a\u1001\u103c\u1004\u103a\u1038\u104b\/\" target=\"_blank\" rel=\"noopener noreferrer\">Stepwise regression<\/a> \u101e\u100a\u103a \u1000\u103c\u102d\u102f\u1010\u1004\u103a\u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u101e\u1030 variable \u1021\u1005\u102f\u1010\u1005\u103a\u1001\u102f\u1019\u103e <a href=\"https:\/\/statorials.org\/my\/multiple-linear-regression\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u1006\u102f\u1010\u103a\u101a\u102f\u1010\u103a\u1019\u103e\u102f\u1015\u102f\u1036\u1005\u1036<\/a> \u1010\u1005\u103a\u1001\u102f\u1000\u102d\u102f \u1010\u100a\u103a\u1006\u1031\u102c\u1000\u103a\u101b\u1014\u103a \u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u1014\u102d\u102f\u1004\u103a\u101e\u100a\u1037\u103a \u101c\u102f\u1015\u103a\u1004\u1014\u103a\u1038\u1005\u1009\u103a\u1010\u1005\u103a\u1001\u102f\u1016\u103c\u1005\u103a\u1015\u103c\u102e\u1038 \u1019\u1031\u102c\u103a\u1012\u101a\u103a\u1021\u1010\u103d\u1004\u103a\u1038 \u1000\u103c\u102d\u102f\u1010\u1004\u103a\u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u101e\u1030\u1019\u103b\u102c\u1038\u1000\u102d\u102f \u1021\u1006\u1004\u1037\u103a\u1006\u1004\u1037\u103a\u1011\u100a\u1037\u103a\u101e\u103d\u1004\u103a\u1038\u1000\u102c \u1016\u101a\u103a\u101b\u103e\u102c\u1038\u1001\u103c\u1004\u103a\u1038\u1016\u103c\u1004\u1037\u103a \u104e\u1004\u103a\u1038\u101e\u102d\u102f\u1037\u101d\u1004\u103a\u101b\u1031\u102c\u1000\u103a\u101b\u1014\u103a \u1000\u102d\u1014\u103a\u1038\u1002\u100f\u1014\u103a\u1038\u1006\u102d\u102f\u1004\u103a\u101b\u102c \u1001\u102d\u102f\u1004\u103a\u101c\u102f\u1036\u101e\u1031\u102c\u1021\u1000\u103c\u1031\u102c\u1004\u103a\u1038\u1015\u103c\u1001\u103b\u1000\u103a\u1019\u101b\u103e\u102d\u1010\u1031\u102c\u1037\u1015\u102b \u101e\u102d\u102f\u1037\u1019\u101f\u102f\u1010\u103a\u104a \u1014\u1031\u102c\u1000\u103a\u1011\u1015\u103a\u1016\u103b\u1000\u103a\u1015\u102b\u104b<\/span><\/p>\n<p> <span style=\"color: #000000;\">stepwise regression \u104f \u1015\u1014\u103a\u1038\u1010\u102d\u102f\u1004\u103a\u101e\u100a\u103a <a href=\"https:\/\/statorials.org\/my\/\u1015\u103c\u1031\u102c\u1004\u103a\u1038\u101c\u1032\u1014\u102d\u102f\u1004\u103a\u101e\u1031\u102c-\u101b\u103e\u1004\u103a\u1038\u101c\u1004\u103a\u1038\u1001\u103b\u1000\u103a-\u1010\u102f\u1036\u1037\u1015\u103c\u1014\u103a\u1019\u103e\u102f\u1019\u103b\u102c\u1038\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u1010\u102f\u1036\u1037\u1015\u103c\u1014\u103a\u1019\u103e\u102f\u1000\u102d\u1014\u103a\u1038\u101b\u103e\u1004\u103a<\/a> \u1014\u103e\u1004\u1037\u103a \u1000\u102d\u1014\u103a\u1038\u1002\u100f\u1014\u103a\u1038\u1021\u101b \u101e\u102d\u101e\u102c\u1011\u1004\u103a\u101b\u103e\u102c\u1038\u1005\u103d\u102c \u1006\u1000\u103a\u1005\u1015\u103a\u1014\u1031\u101e\u100a\u1037\u103a \u1000\u103c\u102d\u102f\u1010\u1004\u103a\u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u1000\u102d\u1014\u103a\u1038\u101b\u103e\u1004\u103a\u1019\u103b\u102c\u1038 \u1021\u102c\u1038\u101c\u102f\u1036\u1038\u1015\u102b\u101d\u1004\u103a\u101e\u100a\u1037\u103a \u1006\u102f\u1010\u103a\u101a\u102f\u1010\u103a\u1019\u103e\u102f\u1015\u102f\u1036\u1005\u1036\u1000\u102d\u102f \u1016\u1014\u103a\u1010\u102e\u1038\u101b\u1014\u103a\u1016\u103c\u1005\u103a\u101e\u100a\u103a\u104b<\/span><\/p>\n<p> <span style=\"color: #000000;\">\u1024\u101e\u1004\u103a\u1001\u1014\u103a\u1038\u1005\u102c\u1010\u103d\u1004\u103a R \u1010\u103d\u1004\u103a \u1021\u1031\u102c\u1000\u103a\u1015\u102b \u1021\u1006\u1004\u1037\u103a\u1006\u1004\u1037\u103a \u1006\u102f\u1010\u103a\u101a\u102f\u1010\u103a\u1019\u103e\u102f \u101c\u102f\u1015\u103a\u1004\u1014\u103a\u1038\u1005\u1009\u103a\u1019\u103b\u102c\u1038\u1000\u102d\u102f \u1019\u100a\u103a\u101e\u102d\u102f\u1037\u101c\u102f\u1015\u103a\u1006\u1031\u102c\u1004\u103a\u101b\u1019\u100a\u103a\u1000\u102d\u102f \u101b\u103e\u1004\u103a\u1038\u1015\u103c\u1011\u102c\u1038\u101e\u100a\u103a\u104b<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">\u1010\u1005\u103a\u1006\u1004\u1037\u103a\u1015\u103c\u102e\u1038\u1010\u1005\u103a\u1006\u1004\u1037\u103a \u101b\u103e\u1031\u1037\u101e\u102d\u102f\u1037\u101b\u103d\u1031\u1038\u1001\u103b\u101a\u103a\u1015\u102b\u104b<\/span><\/li>\n<li> <span style=\"color: #000000;\">\u1010\u1005\u103a\u1006\u1004\u1037\u103a\u1015\u103c\u102e\u1038\u1010\u1005\u103a\u1006\u1004\u1037\u103a \u1014\u1031\u102c\u1000\u103a\u1015\u103c\u1014\u103a\u101b\u103d\u1031\u1038\u1001\u103b\u101a\u103a\u1001\u103c\u1004\u103a\u1038\u104b<\/span><\/li>\n<li> <span style=\"color: #000000;\">\u101c\u1019\u103a\u1038\u1000\u103c\u1031\u102c\u1004\u103a\u1038\u1014\u103e\u1005\u103a\u1001\u102f\u1005\u101c\u102f\u1036\u1038\u1010\u103d\u1004\u103a \u1021\u1006\u1004\u1037\u103a\u1006\u1004\u1037\u103a\u101b\u103d\u1031\u1038\u1001\u103b\u101a\u103a\u1015\u102b\u104b<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">\u1025\u1015\u1019\u102c\u1010\u1005\u103a\u1001\u102f\u1005\u102e\u1021\u1010\u103d\u1000\u103a\u104a \u1000\u103b\u103d\u1014\u103a\u102f\u1015\u103a\u1010\u102d\u102f\u1037\u101e\u100a\u103a built-in <strong>mtcars<\/strong> \u1012\u1031\u1010\u102c\u1021\u1010\u103d\u1032\u1000\u102d\u102f \u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u1015\u102b\u1019\u100a\u103a-<\/span><\/p>\n<pre style=\"background-color: #e5e5e5; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#view first six rows of <em>mtcars\n<\/em><\/span>head(mtcars)\n\n                   mpg cyl disp hp drat wt qsec vs am gear carb\nMazda RX4 21.0 6 160 110 3.90 2.620 16.46 0 1 4 4\nMazda RX4 Wag 21.0 6 160 110 3.90 2.875 17.02 0 1 4 4\nDatsun 710 22.8 4 108 93 3.85 2.320 18.61 1 1 4 1\nHornet 4 Drive 21.4 6 258 110 3.08 3.215 19.44 1 0 3 1\nHornet Sportabout 18.7 8 360 175 3.15 3.440 17.02 0 0 3 2\nValiant 18.1 6 225 105 2.76 3,460 20.22 1 0 3 1\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">\u1010\u102f\u1036\u1037\u1015\u103c\u1014\u103a\u1019\u103e\u102f\u1000\u102d\u1014\u103a\u1038\u101b\u103e\u1004\u103a\u1014\u103e\u1004\u1037\u103a \u1016\u103c\u1005\u103a\u1014\u102d\u102f\u1004\u103a\u1001\u103b\u1031\u101b\u103e\u102d\u101e\u1031\u102c \u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u1000\u102d\u1014\u103a\u1038\u101b\u103e\u1004\u103a\u1019\u103b\u102c\u1038\u1021\u1016\u103c\u1005\u103a \u1012\u1031\u1010\u102c\u101e\u1010\u103a\u1019\u103e\u1010\u103a\u1011\u102c\u1038\u101e\u100a\u1037\u103a \u1021\u1001\u103c\u102c\u1038\u1000\u102d\u1014\u103a\u1038\u101b\u103e\u1004\u103a 10 \u1001\u102f\u1000\u102d\u102f \u1010\u102f\u1036\u1037\u1015\u103c\u1014\u103a\u1019\u103e\u102f\u1000\u102d\u1014\u103a\u1038\u101b\u103e\u1004\u103a\u1021\u1016\u103c\u1005\u103a <em>mpg<\/em> (\u1010\u1005\u103a\u1002\u102b\u101c\u1036\u101c\u103b\u103e\u1004\u103a \u1019\u102d\u102f\u1004\u103a) \u1000\u102d\u102f \u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u104d \u1019\u103b\u102d\u102f\u1038\u1005\u102f\u1036\u1019\u103b\u1009\u103a\u1038\u1000\u103c\u1031\u102c\u1004\u103a\u1038\u1006\u102f\u1010\u103a\u101a\u102f\u1010\u103a\u1019\u103e\u102f\u1015\u102f\u1036\u1005\u1036\u1000\u102d\u102f \u1000\u103b\u103d\u1014\u103a\u102f\u1015\u103a\u1010\u102d\u102f\u1037 \u1016\u103c\u100a\u1037\u103a\u1006\u100a\u103a\u1038\u1015\u1031\u1038\u1015\u102b\u1019\u100a\u103a\u104b<\/span><\/p>\n<p> <span style=\"color: #000000;\">\u1025\u1015\u1019\u102c\u1010\u1005\u103a\u1001\u102f\u1005\u102e\u1021\u1010\u103d\u1000\u103a\u104a \u1021\u1031\u102c\u1000\u103a\u1015\u102b syntax \u1000\u102d\u102f\u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u101e\u100a\u1037\u103a stepwise \u101b\u103d\u1031\u1038\u1001\u103b\u101a\u103a\u1019\u103e\u102f\u101c\u102f\u1015\u103a\u1006\u1031\u102c\u1004\u103a\u101b\u1014\u103a \u1000\u103b\u103d\u1014\u103a\u102f\u1015\u103a\u1010\u102d\u102f\u1037\u101e\u100a\u103a stats package \u104f built-in <a href=\"https:\/\/www.rdocumentation.org\/packages\/stats\/versions\/3.6.2\/topics\/step\" target=\"_blank\" rel=\"noopener noreferrer\">step()<\/a> \u101c\u102f\u1015\u103a\u1006\u1031\u102c\u1004\u103a\u1001\u103b\u1000\u103a\u1000\u102d\u102f \u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u1015\u102b\u1019\u100a\u103a\u104b<\/span><\/p>\n<p style=\"text-align: left;\"> <span style=\"color: #000000;\"><strong>\u1021\u1006\u1004\u1037\u103a (\u1000\u103c\u102c\u1038\u1016\u103c\u1010\u103a\u1015\u102f\u1036\u1005\u1036\u104a \u1026\u1038\u1010\u100a\u103a\u1001\u103b\u1000\u103a\u104a \u1021\u1015\u102d\u102f\u1004\u103a\u1038\u1021\u1001\u103c\u102c\u1038)<\/strong><\/span><\/p>\n<p> <span style=\"color: #000000;\">\u101b\u103d\u103e\u1031-<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong>original model only<\/strong> : \u1019\u1030\u101b\u1004\u103a\u1038\u1019\u1031\u102c\u103a\u1012\u101a\u103a\u104f \u1016\u1031\u102c\u103a\u1019\u103c\u1030\u101c\u102c\u101e\u102c<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>\u1026\u1038\u1010\u100a\u103a\u1001\u103b\u1000\u103a-<\/strong> \u1001\u103c\u1031\u101c\u103e\u1019\u103a\u1038\u101b\u103e\u102c\u1016\u103d\u1031\u1019\u103e\u102f\u1019\u102f\u1012\u103a\u101e\u100a\u103a \u201c\u1014\u103e\u1005\u103a\u1001\u102f\u101c\u102f\u1036\u1038\u201d\u104a \u201c\u1014\u1031\u102c\u1000\u103a\u1015\u103c\u1014\u103a\u201d \u101e\u102d\u102f\u1037\u1019\u101f\u102f\u1010\u103a \u201c\u101b\u103e\u1031\u1037\u101e\u102d\u102f\u1037\u201d \u1016\u103c\u1005\u103a\u1014\u102d\u102f\u1004\u103a\u1015\u102b\u101e\u100a\u103a\u104b<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>\u1014\u101a\u103a\u1015\u101a\u103a-<\/strong> \u1000\u103b\u103d\u1014\u103a\u102f\u1015\u103a\u1010\u102d\u102f\u1037 \u1019\u1031\u102c\u103a\u1012\u101a\u103a\u101e\u102d\u102f\u1037 \u1011\u100a\u1037\u103a\u101e\u103d\u1004\u103a\u1038\u101b\u1014\u103a \u1000\u103c\u102d\u102f\u1038\u1005\u102c\u1038\u101c\u102d\u102f\u101e\u1031\u102c \u1000\u103c\u102d\u102f\u1010\u1004\u103a\u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u101e\u1030\u1019\u103b\u102c\u1038\u1000\u102d\u102f \u101e\u1010\u103a\u1019\u103e\u1010\u103a\u101e\u100a\u1037\u103a \u1016\u1031\u102c\u103a\u1019\u103c\u1030\u101c\u102c\u1010\u1005\u103a\u1001\u102f<\/span><\/li>\n<\/ul>\n<h3> <span style=\"color: #000000;\"><strong>\u1025\u1015\u1019\u102c 1- \u1010\u1005\u103a\u1006\u1004\u1037\u103a\u1015\u103c\u102e\u1038\u1010\u1005\u103a\u1006\u1004\u1037\u103a \u101b\u103e\u1031\u1037\u101e\u102d\u102f\u1037 \u101b\u103d\u1031\u1038\u1001\u103b\u101a\u103a\u1019\u103e\u102f<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">\u1021\u1031\u102c\u1000\u103a\u1015\u102b\u1000\u102f\u1012\u103a\u101e\u100a\u103a \u101b\u103d\u1031\u1038\u1001\u103b\u101a\u103a\u1019\u103e\u102f\u1010\u1005\u103a\u1001\u102f\u1000\u102d\u102f \u1021\u1006\u1004\u1037\u103a\u1006\u1004\u1037\u103a\u101c\u102f\u1015\u103a\u1006\u1031\u102c\u1004\u103a\u1015\u102f\u1036\u1000\u102d\u102f \u1015\u103c\u101e\u101e\u100a\u103a-<\/span><\/p>\n<pre style=\"background-color: #e5e5e5; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#define intercept-only model\n<\/span>intercept_only &lt;- lm(mpg ~ 1, data=mtcars)\n\n<span style=\"color: #008080;\">#define model with all predictors\n<\/span>all &lt;- lm(mpg ~ ., data=mtcars)\n\n<span style=\"color: #008080;\">#perform forward stepwise regression\n<\/span>forward &lt;- step(intercept_only, direction=' <span style=\"color: #008000;\">forward<\/span> ', scope= <span style=\"color: #3366ff;\">formula<\/span> (all), trace=0)\n\n<span style=\"color: #008080;\">#view results of forward stepwise regression<\/span>\nforward$anova\n\n   Step Df Deviance Resid. Df Resid. Dev AIC\n1 NA NA 31 1126.0472 115.94345\n2 + wt -1 847.72525 30 278.3219 73.21736\n3 + cyl -1 87.14997 29 191.1720 63.19800\n4 + hp -1 14.55145 28 176.6205 62.66456\n\n<span style=\"color: #008080;\">#view final model\n<\/span>forward$coefficients\n\n(Intercept) wt cyl hp \n 38.7517874 -3.1669731 -0.9416168 -0.0180381 \n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><em><strong>\u1019\u103e\u1010\u103a\u1001\u103b\u1000\u103a-<\/strong> trace=0 \u1021\u1000\u103c\u1031\u102c\u1004\u103a\u1038\u1015\u103c\u1001\u103b\u1000\u103a\u101e\u100a\u103a R \u101e\u100a\u103a \u1021\u1006\u1004\u1037\u103a\u1006\u1004\u1037\u103a\u101b\u103d\u1031\u1038\u1001\u103b\u101a\u103a\u1019\u103e\u102f\u104f \u101b\u101c\u1012\u103a\u1021\u1015\u103c\u100a\u1037\u103a\u1021\u1005\u102f\u1036\u1000\u102d\u102f \u1019\u1015\u103c\u101e\u101b\u1014\u103a \u1015\u103c\u1031\u102c\u1011\u102c\u1038\u101e\u100a\u103a\u104b \u1000\u103c\u102d\u102f\u1010\u1004\u103a\u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u1014\u102d\u102f\u1004\u103a\u101e\u1031\u102c \u1000\u102d\u1014\u103a\u1038\u101b\u103e\u1004\u103a\u1019\u103b\u102c\u1038 \u1021\u1019\u103b\u102c\u1038\u1021\u1015\u103c\u102c\u1038\u101b\u103e\u102d\u1014\u1031\u1015\u102b\u1000 \u104e\u1004\u103a\u1038\u101e\u100a\u103a \u1014\u1031\u101b\u102c\u1019\u103b\u102c\u1038\u1005\u103d\u102c\u101a\u1030\u1014\u102d\u102f\u1004\u103a\u101e\u100a\u103a\u104b<\/em><\/span><\/p>\n<p> <span style=\"color: #000000;\">\u1024\u101e\u100a\u103a\u1019\u103e\u102c \u101b\u101c\u1012\u103a\u1019\u103b\u102c\u1038\u1000\u102d\u102f \u1019\u100a\u103a\u101e\u102d\u102f\u1037\u1021\u1013\u102d\u1015\u1039\u1015\u102c\u101a\u103a\u1016\u103d\u1004\u1037\u103a\u1006\u102d\u102f\u1014\u102d\u102f\u1004\u103a\u101e\u100a\u103a-<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">\u1015\u1011\u1019\u1026\u1038\u1005\u103d\u102c\u104a \u1000\u103b\u103d\u1014\u103a\u102f\u1015\u103a\u1010\u102d\u102f\u1037\u101e\u100a\u103a \u1000\u103c\u102c\u1038\u1016\u103c\u1010\u103a\u1010\u1005\u103a\u1001\u102f\u1010\u100a\u103a\u1038\u101e\u1031\u102c \u1019\u1031\u102c\u103a\u1012\u101a\u103a\u1014\u103e\u1004\u1037\u103a \u1000\u102d\u102f\u1000\u103a\u100a\u102e\u1015\u102b\u101e\u100a\u103a\u104b \u1024\u1019\u1031\u102c\u103a\u1012\u101a\u103a\u1010\u103d\u1004\u103a AIC <strong>115.94345<\/strong> \u101b\u103e\u102d\u101e\u100a\u103a\u104b<\/span><\/li>\n<li> <span style=\"color: #000000;\">\u1011\u102d\u102f\u1037\u1014\u1031\u102c\u1000\u103a \u1000\u103b\u103d\u1014\u103a\u102f\u1015\u103a\u1010\u102d\u102f\u1037\u101e\u100a\u103a \u1016\u103c\u1005\u103a\u1014\u102d\u102f\u1004\u103a\u1001\u103b\u1031\u101b\u103e\u102d\u101e\u1031\u102c \u1019\u1031\u102c\u103a\u1012\u101a\u103a\u1019\u103b\u102c\u1038\u1021\u102c\u1038\u101c\u102f\u1036\u1038\u1000\u102d\u102f \u1000\u103c\u102d\u102f\u1010\u1004\u103a\u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u101e\u1030\u1021\u1016\u103c\u1005\u103a \u1010\u1015\u103a\u1006\u1004\u103a\u1015\u1031\u1038\u101e\u100a\u103a\u104b <em>\u1021<\/em> \u1014\u102d\u1019\u1037\u103a\u1006\u102f\u1036\u1038 AIC \u1000\u102d\u102f \u1011\u102f\u1010\u103a\u101c\u102f\u1015\u103a\u101e\u100a\u1037\u103a \u1019\u1031\u102c\u103a\u1012\u101a\u103a\u1014\u103e\u1004\u1037\u103a AIC \u1010\u103d\u1004\u103a \u1000\u102d\u1014\u103a\u1038\u1002\u100f\u1014\u103a\u1038 \u101e\u102d\u101e\u102d\u101e\u102c\u101e\u102c \u101c\u103b\u1031\u102c\u1037\u1000\u103b\u1019\u103e\u102f \u101b\u103e\u102d\u101e\u100a\u103a \u1024\u1019\u1031\u102c\u103a\u1012\u101a\u103a\u1010\u103d\u1004\u103a AIC <strong>73.21736<\/strong> \u101b\u103e\u102d\u101e\u100a\u103a\u104b<\/span><\/li>\n<li> <span style=\"color: #000000;\">\u1014\u1031\u102c\u1000\u103a\u1010\u1005\u103a\u1001\u102f\u104a \u1000\u103b\u103d\u1014\u103a\u102f\u1015\u103a\u1010\u102d\u102f\u1037\u101e\u100a\u103a \u1000\u103c\u102d\u102f\u1010\u1004\u103a\u1010\u103d\u1000\u103a\u1006\u1019\u103e\u102f\u1014\u103e\u1005\u103a\u1001\u102f\u1016\u103c\u1004\u1037\u103a \u1016\u103c\u1005\u103a\u1014\u102d\u102f\u1004\u103a\u101e\u100a\u1037\u103a \u1019\u1031\u102c\u103a\u1012\u101a\u103a\u1021\u102c\u1038\u101c\u102f\u1036\u1038\u1000\u102d\u102f \u1016\u103c\u100a\u1037\u103a\u1006\u100a\u103a\u1038\u1015\u1031\u1038\u101e\u100a\u103a\u104b \u1021\u1014\u102d\u1019\u1037\u103a\u1006\u102f\u1036\u1038 AIC \u1000\u102d\u102f \u1011\u102f\u1010\u103a\u101c\u102f\u1015\u103a\u101e\u100a\u1037\u103a \u1019\u1031\u102c\u103a\u1012\u101a\u103a\u1014\u103e\u1004\u1037\u103a AIC \u1010\u103d\u1004\u103a \u1000\u102d\u1014\u103a\u1038\u1002\u100f\u1014\u103a\u1038 \u101e\u102d\u101e\u102d\u101e\u102c\u101e\u102c \u101c\u103b\u1031\u102c\u1037\u1000\u103b\u1019\u103e\u102f \u101b\u103e\u102d\u101e\u100a\u103a \u104a single-predictor model \u1014\u103e\u1004\u1037\u103a \u1014\u103e\u102d\u102f\u1004\u103a\u1038\u101a\u103e\u1009\u103a\u1015\u102b\u1000 <em>cyl<\/em> predictor \u1000\u102d\u102f \u1011\u100a\u1037\u103a\u101e\u103d\u1004\u103a\u1038\u1011\u102c\u1038\u101e\u100a\u103a\u104b \u1024\u1019\u1031\u102c\u103a\u1012\u101a\u103a\u1010\u103d\u1004\u103a AIC <strong>63.19800<\/strong> \u101b\u103e\u102d\u101e\u100a\u103a\u104b<\/span><\/li>\n<li> <span style=\"color: #000000;\">\u1011\u102d\u102f\u1037\u1014\u1031\u102c\u1000\u103a\u104a \u1000\u103b\u103d\u1014\u103a\u102f\u1015\u103a\u1010\u102d\u102f\u1037\u101e\u100a\u103a \u1016\u103c\u1005\u103a\u1014\u102d\u102f\u1004\u103a\u1001\u103b\u1031\u101b\u103e\u102d\u101e\u1031\u102c \u1019\u1031\u102c\u103a\u1012\u101a\u103a\u1021\u102c\u1038\u101c\u102f\u1036\u1038\u1000\u102d\u102f \u1000\u103c\u102d\u102f\u1010\u1004\u103a\u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u101e\u1030 \u101e\u102f\u1036\u1038\u1026\u1038\u1011\u1036 \u1016\u103c\u100a\u1037\u103a\u101e\u103d\u1004\u103a\u1038\u101e\u100a\u103a\u104b \u1021\u1014\u102d\u1019\u1037\u103a\u1006\u102f\u1036\u1038 AIC \u1000\u102d\u102f \u1011\u102f\u1010\u103a\u101c\u102f\u1015\u103a\u101e\u100a\u1037\u103a \u1019\u1031\u102c\u103a\u1012\u101a\u103a\u1014\u103e\u1004\u1037\u103a AIC \u1010\u103d\u1004\u103a \u1000\u102d\u1014\u103a\u1038\u1002\u100f\u1014\u103a\u1038 \u1021\u1001\u103b\u1000\u103a\u1021\u101c\u1000\u103a \u101e\u102d\u101e\u102d\u101e\u102c\u101e\u102c \u101c\u103b\u1031\u102c\u1037\u1000\u103b\u1019\u103e\u102f \u101b\u103e\u102d\u101e\u1031\u102c \u1019\u1031\u102c\u103a\u1012\u101a\u103a\u101e\u100a\u103a <em>\u1000\u1031\u102c\u1004\u103a\u101b\u1031<\/em> \u1021\u102c\u1038 \u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u1015\u1031\u1038\u101e\u1030\u1021\u102c\u1038 \u1011\u100a\u1037\u103a\u101e\u103d\u1004\u103a\u1038\u1011\u102c\u1038\u101e\u100a\u103a\u104b \u1024\u1019\u1031\u102c\u103a\u1012\u101a\u103a\u1010\u103d\u1004\u103a AIC \u101e\u100a\u103a <strong>62.66456<\/strong> \u101b\u103e\u102d\u101e\u100a\u103a\u104b<\/span><\/li>\n<li> <span style=\"color: #000000;\">\u1011\u102d\u102f\u1037\u1014\u1031\u102c\u1000\u103a\u104a \u1000\u103b\u103d\u1014\u103a\u102f\u1015\u103a\u1010\u102d\u102f\u1037\u101e\u100a\u103a \u1016\u103c\u1005\u103a\u1014\u102d\u102f\u1004\u103a\u1001\u103b\u1031\u101b\u103e\u102d\u101e\u1031\u102c \u1019\u1031\u102c\u103a\u1012\u101a\u103a\u1021\u102c\u1038\u101c\u102f\u1036\u1038\u1000\u102d\u102f \u1000\u103c\u102d\u102f\u1010\u1004\u103a\u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u101e\u1030 \u101c\u1031\u1038\u1026\u1038\u1021\u1010\u103d\u1000\u103a \u1016\u103c\u100a\u1037\u103a\u1006\u100a\u103a\u1038\u1015\u1031\u1038\u101e\u100a\u103a\u104b \u1024\u1019\u1031\u102c\u103a\u1012\u101a\u103a\u1019\u103b\u102c\u1038\u1011\u1032\u1019\u103e \u1010\u1005\u103a\u1001\u102f\u1019\u103e AIC \u1010\u103d\u1004\u103a \u101e\u102d\u101e\u102c\u1011\u1004\u103a\u101b\u103e\u102c\u1038\u1005\u103d\u102c \u101c\u103b\u1031\u102c\u1037\u1000\u103b\u101e\u103d\u102c\u1038\u1001\u103c\u1004\u103a\u1038 \u1019\u101b\u103e\u102d\u101e\u1031\u102c\u1000\u103c\u1031\u102c\u1004\u1037\u103a \u101c\u102f\u1015\u103a\u1004\u1014\u103a\u1038\u1005\u1009\u103a\u1000\u102d\u102f \u101b\u1015\u103a\u1010\u1014\u1037\u103a\u101c\u102d\u102f\u1000\u103a\u1015\u102b\u101e\u100a\u103a\u104b<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">\u1014\u1031\u102c\u1000\u103a\u1006\u102f\u1036\u1038\u1015\u102f\u1036\u1005\u1036\u101e\u100a\u103a-<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>mpg ~ 38.75 \u2013 3.17*weight \u2013 0.94*cyl \u2013 0.02*hyp<\/strong><\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>\u1025\u1015\u1019\u102c 2- \u1010\u1005\u103a\u1006\u1004\u1037\u103a\u1015\u103c\u102e\u1038\u1010\u1005\u103a\u1006\u1004\u1037\u103a \u1014\u1031\u102c\u1000\u103a\u1015\u103c\u1014\u103a\u101b\u103d\u1031\u1038\u1001\u103b\u101a\u103a\u1001\u103c\u1004\u103a\u1038\u104b<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">\u1021\u1031\u102c\u1000\u103a\u1016\u1031\u102c\u103a\u1015\u103c\u1015\u102b \u1000\u102f\u1012\u103a\u101e\u100a\u103a \u1014\u1031\u102c\u1000\u103a\u1015\u103c\u1014\u103a\u1006\u102f\u1010\u103a\u1014\u100a\u103a\u1038\u1000\u102d\u102f \u1015\u103c\u101e\u101e\u100a\u103a-<\/span><\/p>\n<pre style=\"background-color: #e5e5e5; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#define intercept-only model\n<\/span>intercept_only &lt;- lm(mpg ~ 1, data=mtcars)\n\n<span style=\"color: #008080;\">#define model with all predictors\n<\/span>all &lt;- lm(mpg ~ ., data=mtcars)\n\n<span style=\"color: #008080;\">#perform backward stepwise regression\n<\/span>backward &lt;- step(all, direction=' <span style=\"color: #008000;\">backward<\/span> ', scope= <span style=\"color: #3366ff;\">formula<\/span> (all), trace=0)\n\n<span style=\"color: #008080;\">#view results of backward stepwise regression<\/span>\nbackward$anova\n\n    Step Df Deviance Resid. Df Resid. Dev AIC\n1 NA NA 21 147.4944 70.89774\n2 - cyl 1 0.07987121 22 147.5743 68.91507\n3 - vs 1 0.26852280 23 147.8428 66.97324\n4 - carb 1 0.68546077 24 148.5283 65.12126\n5 - gear 1 1.56497053 25 150.0933 63.45667\n6 - drat 1 3.34455117 26 153.4378 62.16190\n7 - available 1 6.62865369 27 160.0665 61.51530\n8 - hp 1 9.21946935 28 169.2859 61.30730\n\n<span style=\"color: #008080;\">#view final model\n<\/span>backward$coefficients\n\n(Intercept) wt qsec am \n   9.617781 -3.916504 1.225886 2.935837\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">\u1024\u101e\u100a\u103a\u1019\u103e\u102c \u101b\u101c\u1012\u103a\u1019\u103b\u102c\u1038\u1000\u102d\u102f \u1019\u100a\u103a\u101e\u102d\u102f\u1037\u1021\u1013\u102d\u1015\u1039\u1015\u102c\u101a\u103a\u1016\u103d\u1004\u1037\u103a\u1006\u102d\u102f\u1014\u102d\u102f\u1004\u103a\u101e\u100a\u103a-<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">\u1015\u1011\u1019\u1026\u1038\u1005\u103d\u102c <em>p<\/em> \u1000\u103c\u102d\u102f\u1010\u1004\u103a\u1010\u103d\u1000\u103a\u1006\u1019\u103e\u102f\u1021\u102c\u1038\u101c\u102f\u1036\u1038\u1000\u102d\u102f \u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u104d \u1019\u1031\u102c\u103a\u1012\u101a\u103a\u1010\u1005\u103a\u1001\u102f\u1014\u103e\u1004\u1037\u103a \u1000\u102d\u102f\u1000\u103a\u100a\u102e\u1015\u102b\u101e\u100a\u103a\u104b \u1012\u102b\u1000\u102d\u102f M <sub>p<\/sub> \u1021\u1016\u103c\u1005\u103a \u101e\u1010\u103a\u1019\u103e\u1010\u103a\u1015\u102b\u104b<\/span><\/li>\n<li> <span style=\"color: #000000;\">\u1011\u102d\u102f\u1037\u1014\u1031\u102c\u1000\u103a\u104a k = p\u104a p-1\u104a\u20261 \u1021\u1010\u103d\u1000\u103a\u104a \u1000\u103b\u103d\u1014\u103a\u102f\u1015\u103a\u1010\u102d\u102f\u1037\u101e\u100a\u103a M <sub>k<\/sub> \u1010\u103d\u1004\u103a \u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u1001\u103b\u1000\u103a\u1010\u1005\u103a\u1001\u102f\u1019\u103e\u101c\u103d\u1032\u104d k-1 \u1000\u102d\u1014\u103a\u1038\u101b\u103e\u1004\u103a\u1019\u103b\u102c\u1038 \u1005\u102f\u1005\u102f\u1015\u1031\u102b\u1004\u103a\u1038 k-1 \u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u101e\u1030\u1000\u102d\u1014\u103a\u1038\u101b\u103e\u1004\u103a\u1019\u103b\u102c\u1038\u1015\u102b\u101b\u103e\u102d\u101e\u1031\u102c k \u1019\u1031\u102c\u103a\u1012\u101a\u103a\u1019\u103b\u102c\u1038\u1021\u102c\u1038\u101c\u102f\u1036\u1038\u1014\u103e\u1004\u1037\u103a \u1000\u102d\u102f\u1000\u103a\u100a\u102e\u1015\u102b\u101e\u100a\u103a\u104b \u1015\u103c\u102e\u1038\u101b\u1004\u103a \u1012\u102e k \u1019\u1031\u102c\u103a\u1012\u101a\u103a\u1010\u103d\u1031\u1011\u1032\u1019\u103e\u102c \u1021\u1000\u1031\u102c\u1004\u103a\u1038\u1006\u102f\u1036\u1038\u1000\u102d\u102f \u101b\u103d\u1031\u1038\u1015\u103c\u102e\u1038 M <sub>k-1<\/sub> \u101c\u102d\u102f\u1037 \u1001\u1031\u102b\u103a\u1015\u102b\u1010\u101a\u103a\u104b<\/span><\/li>\n<li> <span style=\"color: #000000;\">\u1014\u1031\u102c\u1000\u103a\u1006\u102f\u1036\u1038\u1010\u103d\u1004\u103a\u104a \u1000\u103b\u103d\u1014\u103a\u102f\u1015\u103a\u1010\u102d\u102f\u1037\u101e\u100a\u103a AIC \u1000\u102d\u102f \u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u104d M <sub>0<\/sub> \u2026 M <sub>p<\/sub> \u1019\u103e \u1021\u1000\u1031\u102c\u1004\u103a\u1038\u1006\u102f\u1036\u1038\u1019\u1031\u102c\u103a\u1012\u101a\u103a\u1000\u102d\u102f \u101b\u103d\u1031\u1038\u1001\u103b\u101a\u103a\u101e\u100a\u103a\u104b<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">\u1014\u1031\u102c\u1000\u103a\u1006\u102f\u1036\u1038\u1015\u102f\u1036\u1005\u1036\u101e\u100a\u103a-<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>mpg ~ 9.62 \u2013 3.92*weight + 1.23*qsec + 2.94*am<\/strong><\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>\u1025\u1015\u1019\u102c 3- \u101c\u1019\u103a\u1038\u1000\u103c\u1031\u102c\u1004\u103a\u1038\u1014\u103e\u1005\u103a\u1001\u102f\u1005\u101c\u102f\u1036\u1038\u1021\u1010\u103d\u1000\u103a \u1021\u1006\u1004\u1037\u103a\u1006\u1004\u1037\u103a\u101b\u103d\u1031\u1038\u1001\u103b\u101a\u103a\u1001\u103c\u1004\u103a\u1038\u104b<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">\u1021\u1031\u102c\u1000\u103a\u1016\u1031\u102c\u103a\u1015\u103c\u1015\u102b \u1000\u102f\u1012\u103a\u101e\u100a\u103a \u101c\u1019\u103a\u1038\u1000\u103c\u1031\u102c\u1004\u103a\u1038\u1014\u103e\u1005\u103a\u1001\u102f\u1005\u101c\u102f\u1036\u1038\u1010\u103d\u1004\u103a \u1021\u1006\u1004\u1037\u103a\u1006\u1004\u1037\u103a\u101b\u103d\u1031\u1038\u1001\u103b\u101a\u103a\u1019\u103e\u102f\u1000\u102d\u102f \u1019\u100a\u103a\u101e\u102d\u102f\u1037\u101c\u102f\u1015\u103a\u1006\u1031\u102c\u1004\u103a\u101b\u1019\u100a\u103a\u1000\u102d\u102f \u1015\u103c\u101e\u101e\u100a\u103a-<\/span><\/p>\n<pre style=\"background-color: #e5e5e5; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#define intercept-only model\n<\/span>intercept_only &lt;- lm(mpg ~ 1, data=mtcars)\n\n<span style=\"color: #008080;\">#define model with all predictors\n<\/span>all &lt;- lm(mpg ~ ., data=mtcars)\n\n<span style=\"color: #008080;\">#perform backward stepwise regression\n<\/span>both &lt;- step(intercept_only, direction=' <span style=\"color: #008000;\">both<\/span> ', scope= <span style=\"color: #3366ff;\">formula<\/span> (all), trace=0)\n\n<span style=\"color: #008080;\">#view results of backward stepwise regression<\/span>\nboth$anova\n\n   Step Df Deviance Resid. Df Resid. Dev AIC\n1 NA NA 31 1126.0472 115.94345\n2 + wt -1 847.72525 30 278.3219 73.21736\n3 + cyl -1 87.14997 29 191.1720 63.19800\n4 + hp -1 14.55145 28 176.6205 62.66456\n\n<span style=\"color: #008080;\">#view final model\n<\/span>both$coefficients\n\n(Intercept) wt cyl hp \n 38.7517874 -3.1669731 -0.9416168 -0.0180381 \n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">\u1024\u101e\u100a\u103a\u1019\u103e\u102c \u101b\u101c\u1012\u103a\u1019\u103b\u102c\u1038\u1000\u102d\u102f \u1019\u100a\u103a\u101e\u102d\u102f\u1037\u1021\u1013\u102d\u1015\u1039\u1015\u102c\u101a\u103a\u1016\u103d\u1004\u1037\u103a\u1006\u102d\u102f\u1014\u102d\u102f\u1004\u103a\u101e\u100a\u103a-<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">\u1015\u1011\u1019\u1026\u1038\u1005\u103d\u102c\u104a \u1000\u103b\u103d\u1014\u103a\u102f\u1015\u103a\u1010\u102d\u102f\u1037\u101e\u100a\u103a \u1000\u103c\u102c\u1038\u1016\u103c\u1010\u103a\u1010\u1005\u103a\u1001\u102f\u1010\u100a\u103a\u1038\u101e\u1031\u102c \u1019\u1031\u102c\u103a\u1012\u101a\u103a\u1014\u103e\u1004\u1037\u103a \u1000\u102d\u102f\u1000\u103a\u100a\u102e\u1015\u102b\u101e\u100a\u103a\u104b<\/span><\/li>\n<li> <span style=\"color: #000000;\">\u1011\u102d\u102f\u1037\u1014\u1031\u102c\u1000\u103a\u104a \u1000\u103b\u103d\u1014\u103a\u102f\u1015\u103a\u1010\u102d\u102f\u1037\u101e\u100a\u103a \u1021\u1006\u1004\u1037\u103a\u1006\u1004\u1037\u103a\u101b\u103d\u1031\u1038\u1001\u103b\u101a\u103a\u1019\u103e\u102f\u1021\u1010\u103d\u1000\u103a \u101c\u102f\u1015\u103a\u1006\u1031\u102c\u1004\u103a\u101e\u1000\u1032\u1037\u101e\u102d\u102f\u1037 \u1019\u1031\u102c\u103a\u1012\u101a\u103a\u101e\u102d\u102f\u1037 \u1000\u103c\u102d\u102f\u1010\u1004\u103a\u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u101e\u1030\u1019\u103b\u102c\u1038\u1000\u102d\u102f \u1006\u1000\u103a\u1010\u102d\u102f\u1000\u103a\u1011\u100a\u1037\u103a\u1015\u102b\u101e\u100a\u103a\u104b \u101e\u102d\u102f\u1037\u101e\u1031\u102c\u103a\u101c\u100a\u103a\u1038\u104a \u1000\u103c\u102d\u102f\u1010\u1004\u103a\u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u101e\u1030\u1010\u102d\u102f\u1004\u103a\u1038\u1000\u102d\u102f \u1015\u1031\u102b\u1004\u103a\u1038\u1011\u100a\u1037\u103a\u1015\u103c\u102e\u1038\u1014\u1031\u102c\u1000\u103a\u104a \u1000\u103b\u103d\u1014\u103a\u102f\u1015\u103a\u1010\u102d\u102f\u1037\u101e\u100a\u103a \u1019\u1031\u102c\u103a\u1012\u101a\u103a\u1000\u102d\u102f\u1000\u103a\u100a\u102e\u1019\u103e\u102f\u1010\u103d\u1004\u103a \u1010\u102d\u102f\u1038\u1010\u1000\u103a\u1019\u103e\u102f\u1000\u102d\u102f \u1019\u1015\u1031\u1038\u1010\u1031\u102c\u1037\u101e\u100a\u1037\u103a \u1000\u103c\u102d\u102f\u1010\u1004\u103a\u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u1019\u103e\u102f\u1019\u103b\u102c\u1038\u1000\u102d\u102f \u1016\u101a\u103a\u101b\u103e\u102c\u1038\u1001\u1032\u1037\u101e\u100a\u103a\u104b<\/span><\/li>\n<li> <span style=\"color: #000000;\">\u1014\u1031\u102c\u1000\u103a\u1006\u102f\u1036\u1038\u1015\u102f\u1036\u1005\u1036\u1010\u1005\u103a\u1001\u102f\u1019\u1015\u103c\u102e\u1038\u1019\u1001\u103b\u1004\u103a\u1038 \u1012\u102e\u101c\u102f\u1015\u103a\u1004\u1014\u103a\u1038\u1005\u1009\u103a\u1000\u102d\u102f \u1011\u1015\u103a\u1001\u102b\u1010\u101c\u1032\u101c\u1032\u101c\u102f\u1015\u103a\u1010\u101a\u103a\u104b<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">\u1014\u1031\u102c\u1000\u103a\u1006\u102f\u1036\u1038\u1015\u102f\u1036\u1005\u1036\u101e\u100a\u103a-<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>mpg ~ 9.62 \u2013 3.92*weight + 1.23*qsec + 2.94*am<\/strong><\/span><\/p>\n<p> <span style=\"color: #000000;\">\u101b\u103e\u1031\u1037\u101e\u102d\u102f\u1037 \u1001\u103c\u1031\u101c\u103e\u1019\u103a\u1038\u101b\u103d\u1031\u1038\u1001\u103b\u101a\u103a\u1001\u103c\u1004\u103a\u1038\u1014\u103e\u1004\u1037\u103a \u1001\u103c\u1031\u101c\u103e\u1019\u103a\u1038\u101b\u103d\u1031\u1038\u1001\u103b\u101a\u103a\u1001\u103c\u1004\u103a\u1038\u1010\u102d\u102f\u1037\u101e\u100a\u103a \u101c\u1019\u103a\u1038\u1000\u103c\u1031\u102c\u1004\u103a\u1038\u1014\u103e\u1005\u103a\u1001\u102f\u101c\u102f\u1036\u1038\u1010\u103d\u1004\u103a \u1010\u1030\u100a\u102e\u101e\u1031\u102c \u1014\u1031\u102c\u1000\u103a\u1006\u102f\u1036\u1038\u1015\u102f\u1036\u1005\u1036\u1000\u102d\u102f \u1016\u103c\u1005\u103a\u1015\u1031\u102b\u103a\u1005\u1031\u1015\u103c\u102e\u1038 \u1014\u1031\u102c\u1000\u103a\u101e\u102d\u102f\u1037 \u1001\u103c\u1031\u101c\u103e\u1019\u103a\u1038\u101b\u103d\u1031\u1038\u1001\u103b\u101a\u103a\u1019\u103e\u102f\u101e\u100a\u103a \u1019\u1010\u1030\u100a\u102e\u101e\u1031\u102c\u1015\u102f\u1036\u1005\u1036\u1000\u102d\u102f \u1016\u103c\u1005\u103a\u1015\u1031\u102b\u103a\u1005\u1031\u101e\u100a\u103a\u1000\u102d\u102f \u101e\u1010\u102d\u1015\u103c\u102f\u1015\u102b\u104b<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>\u1011\u1015\u103a\u101c\u1031\u102c\u1004\u103a\u1038\u1021\u101b\u1004\u103a\u1038\u1021\u1019\u103c\u1005\u103a\u1019\u103b\u102c\u1038<\/strong><\/span><\/h3>\n<p> <a href=\"https:\/\/statorials.org\">Regression Slope \u104f \u1021\u101b\u1031\u1038\u1015\u102b\u1015\u102f\u1036\u1000\u102d\u102f \u1005\u1019\u103a\u1038\u101e\u1015\u103a\u1014\u100a\u103a\u1038<\/a><br \/> <a href=\"https:\/\/statorials.org\">Regression Table \u1000\u102d\u102f \u1018\u101a\u103a\u101c\u102d\u102f\u1016\u1010\u103a\u1015\u103c\u102e\u1038 \u1021\u1013\u102d\u1015\u102b\u101a\u103a\u101b\u1019\u101c\u1032<\/a><br \/> <a href=\"https:\/\/statorials.org\">Regression \u1010\u103d\u1004\u103a Multicollinearity \u1021\u1010\u103d\u1000\u103a\u101c\u1019\u103a\u1038\u100a\u103d\u103e\u1014\u103a<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Stepwise regression \u101e\u100a\u103a \u1000\u103c\u102d\u102f\u1010\u1004\u103a\u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u101e\u1030 variable \u1021\u1005\u102f\u1010\u1005\u103a\u1001\u102f\u1019\u103e \u1006\u102f\u1010\u103a\u101a\u102f\u1010\u103a\u1019\u103e\u102f\u1015\u102f\u1036\u1005\u1036 \u1010\u1005\u103a\u1001\u102f\u1000\u102d\u102f \u1010\u100a\u103a\u1006\u1031\u102c\u1000\u103a\u101b\u1014\u103a \u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u1014\u102d\u102f\u1004\u103a\u101e\u100a\u1037\u103a \u101c\u102f\u1015\u103a\u1004\u1014\u103a\u1038\u1005\u1009\u103a\u1010\u1005\u103a\u1001\u102f\u1016\u103c\u1005\u103a\u1015\u103c\u102e\u1038 \u1019\u1031\u102c\u103a\u1012\u101a\u103a\u1021\u1010\u103d\u1004\u103a\u1038 \u1000\u103c\u102d\u102f\u1010\u1004\u103a\u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u101e\u1030\u1019\u103b\u102c\u1038\u1000\u102d\u102f \u1021\u1006\u1004\u1037\u103a\u1006\u1004\u1037\u103a\u1011\u100a\u1037\u103a\u101e\u103d\u1004\u103a\u1038\u1000\u102c \u1016\u101a\u103a\u101b\u103e\u102c\u1038\u1001\u103c\u1004\u103a\u1038\u1016\u103c\u1004\u1037\u103a \u104e\u1004\u103a\u1038\u101e\u102d\u102f\u1037\u101d\u1004\u103a\u101b\u1031\u102c\u1000\u103a\u101b\u1014\u103a \u1000\u102d\u1014\u103a\u1038\u1002\u100f\u1014\u103a\u1038\u1006\u102d\u102f\u1004\u103a\u101b\u102c \u1001\u102d\u102f\u1004\u103a\u101c\u102f\u1036\u101e\u1031\u102c\u1021\u1000\u103c\u1031\u102c\u1004\u103a\u1038\u1015\u103c\u1001\u103b\u1000\u103a\u1019\u101b\u103e\u102d\u1010\u1031\u102c\u1037\u1015\u102b \u101e\u102d\u102f\u1037\u1019\u101f\u102f\u1010\u103a\u104a \u1014\u1031\u102c\u1000\u103a\u1011\u1015\u103a\u1016\u103b\u1000\u103a\u1015\u102b\u104b stepwise regression \u104f \u1015\u1014\u103a\u1038\u1010\u102d\u102f\u1004\u103a\u101e\u100a\u103a \u1010\u102f\u1036\u1037\u1015\u103c\u1014\u103a\u1019\u103e\u102f\u1000\u102d\u1014\u103a\u1038\u101b\u103e\u1004\u103a \u1014\u103e\u1004\u1037\u103a \u1000\u102d\u1014\u103a\u1038\u1002\u100f\u1014\u103a\u1038\u1021\u101b \u101e\u102d\u101e\u102c\u1011\u1004\u103a\u101b\u103e\u102c\u1038\u1005\u103d\u102c \u1006\u1000\u103a\u1005\u1015\u103a\u1014\u1031\u101e\u100a\u1037\u103a \u1000\u103c\u102d\u102f\u1010\u1004\u103a\u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u1000\u102d\u1014\u103a\u1038\u101b\u103e\u1004\u103a\u1019\u103b\u102c\u1038 \u1021\u102c\u1038\u101c\u102f\u1036\u1038\u1015\u102b\u101d\u1004\u103a\u101e\u100a\u1037\u103a \u1006\u102f\u1010\u103a\u101a\u102f\u1010\u103a\u1019\u103e\u102f\u1015\u102f\u1036\u1005\u1036\u1000\u102d\u102f \u1016\u1014\u103a\u1010\u102e\u1038\u101b\u1014\u103a\u1016\u103c\u1005\u103a\u101e\u100a\u103a\u104b 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