{"id":4507,"date":"2023-07-10T13:33:15","date_gmt":"2023-07-10T13:33:15","guid":{"rendered":"https:\/\/statorials.org\/ar\/%d8%b3%d8%aa%d9%8a%d8%a8%d9%8a%d9%83-%d8%b5\/"},"modified":"2023-07-10T13:33:15","modified_gmt":"2023-07-10T13:33:15","slug":"%d8%b3%d8%aa%d9%8a%d8%a8%d9%8a%d9%83-%d8%b5","status":"publish","type":"post","link":"https:\/\/statorials.org\/ar\/%d8%b3%d8%aa%d9%8a%d8%a8%d9%8a%d9%83-%d8%b5\/","title":{"rendered":"\u0643\u064a\u0641\u064a\u0629 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 stepaic \u0641\u064a r \u0644\u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u064a\u0632\u0629"},"content":{"rendered":"<p><\/p>\n<hr>\n<p style=\";text-align:right;direction:rtl\"><span style=\"color: #000000;\">\u0645\u0639\u064a\u0627\u0631 \u0627\u0644\u0645\u0639\u0644\u0648\u0645\u0627\u062a Akaike ( <strong>AIC<\/strong> ) \u0647\u0648 \u0645\u0642\u064a\u0627\u0633 \u064a\u0633\u062a\u062e\u062f\u0645 \u0644\u062a\u062d\u062f\u064a\u062f \u0645\u062f\u0649 \u0645\u0644\u0627\u0621\u0645\u0629 \u0627\u0644\u0646\u0645\u0648\u0630\u062c \u0644\u0645\u062c\u0645\u0648\u0639\u0629 \u0627\u0644\u0628\u064a\u0627\u0646\u0627\u062a.<\/span><\/p>\n<p style=\";text-align:right;direction:rtl\"> <span style=\"color: #000000;\">\u064a\u062a\u0645 \u062d\u0633\u0627\u0628\u0647 \u0639\u0644\u0649 \u0627\u0644\u0646\u062d\u0648 \u0627\u0644\u062a\u0627\u0644\u064a:<\/span><\/p>\n<p style=\";text-align:right;direction:rtl\"> <strong><span style=\"color: #000000;\">AIC = 2K \u2013 2 <em>\u0644\u062a\u0631<\/em> (L)<\/span><\/strong><\/p>\n<p style=\";text-align:right;direction:rtl\"> <span style=\"color: #000000;\">\u0630\u0647\u0628:<\/span><\/p>\n<ul style=\";text-align:right;direction:rtl\">\n<li style=\";text-align:right;direction:rtl\"> <span style=\"color: #000000;\"><strong>K:<\/strong> \u0639\u062f\u062f \u0645\u0639\u0644\u0645\u0627\u062a \u0627\u0644\u0646\u0645\u0648\u0630\u062c. \u0627\u0644\u0642\u064a\u0645\u0629 \u0627\u0644\u0627\u0641\u062a\u0631\u0627\u0636\u064a\u0629 \u0644\u0640 K \u0647\u064a 2\u060c \u0648\u0628\u0627\u0644\u062a\u0627\u0644\u064a \u0641\u0625\u0646 \u0627\u0644\u0646\u0645\u0648\u0630\u062c \u0627\u0644\u0630\u064a \u064a\u062d\u062a\u0648\u064a \u0639\u0644\u0649 \u0645\u062a\u063a\u064a\u0631 \u062a\u0648\u0642\u0639 \u0648\u0627\u062d\u062f \u0641\u0642\u0637 \u0633\u064a\u0643\u0648\u0646 \u0644\u0647 \u0642\u064a\u0645\u0629 K \u0647\u064a 2+1 = 3.<\/span><\/li>\n<li style=\";text-align:right;direction:rtl\"> <span style=\"color: #000000;\"><strong><em>ln<\/em> (L)<\/strong> : \u0627\u0644\u0627\u062d\u062a\u0645\u0627\u0644\u064a\u0629 \u0627\u0644\u0644\u0648\u063a\u0627\u0631\u064a\u062a\u0645\u064a\u0629 \u0644\u0644\u0646\u0645\u0648\u0630\u062c. \u064a\u0645\u0643\u0646 \u0644\u0645\u0639\u0638\u0645 \u0627\u0644\u0628\u0631\u0627\u0645\u062c \u0627\u0644\u0625\u062d\u0635\u0627\u0626\u064a\u0629 \u062d\u0633\u0627\u0628 \u0647\u0630\u0647 \u0627\u0644\u0642\u064a\u0645\u0629 \u0644\u0643 \u062a\u0644\u0642\u0627\u0626\u064a\u064b\u0627.<\/span><\/li>\n<\/ul>\n<p style=\";text-align:right;direction:rtl\"> <span style=\"color: #000000;\">\u062a\u0645 \u062a\u0635\u0645\u064a\u0645 AIC \u0644\u0644\u0639\u062b\u0648\u0631 \u0639\u0644\u0649 \u0627\u0644\u0646\u0645\u0648\u0630\u062c \u0627\u0644\u0630\u064a \u064a\u0641\u0633\u0631 \u0623\u0643\u0628\u0631 \u0642\u062f\u0631 \u0645\u0646 \u0627\u0644\u0627\u062e\u062a\u0644\u0627\u0641 \u0641\u064a \u0627\u0644\u0628\u064a\u0627\u0646\u0627\u062a\u060c \u0645\u0639 \u0645\u0639\u0627\u0642\u0628\u0629 \u0627\u0644\u0646\u0645\u0627\u0630\u062c \u0627\u0644\u062a\u064a \u062a\u0633\u062a\u062e\u062f\u0645 \u0639\u062f\u062f\u064b\u0627 \u0645\u0641\u0631\u0637\u064b\u0627 \u0645\u0646 \u0627\u0644\u0645\u0639\u0644\u0645\u0627\u062a.<\/span><\/p>\n<p style=\";text-align:right;direction:rtl\"> <span style=\"color: #000000;\">\u064a\u0645\u0643\u0646\u0643 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u062f\u0627\u0644\u0629 <strong>stepAIC()<\/strong> \u0645\u0646 \u062d\u0632\u0645\u0629 <strong>MASS<\/strong> \u0641\u064a R \u0644\u0625\u0636\u0627\u0641\u0629 \u0645\u062a\u063a\u064a\u0631\u0627\u062a \u0627\u0644\u062a\u0648\u0642\u0639 \u0648\u0625\u0632\u0627\u0644\u062a\u0647\u0627 \u0628\u0634\u0643\u0644 \u0645\u062a\u0643\u0631\u0631 \u0645\u0646 \u0646\u0645\u0648\u0630\u062c \u0627\u0644\u0627\u0646\u062d\u062f\u0627\u0631 \u062d\u062a\u0649 \u062a\u062c\u062f \u0645\u062c\u0645\u0648\u0639\u0629 \u0645\u062a\u063a\u064a\u0631\u0627\u062a \u0627\u0644\u062a\u0648\u0642\u0639 (\u0623\u0648 &#8220;\u0627\u0644\u0645\u064a\u0632\u0627\u062a&#8221;) \u0627\u0644\u062a\u064a \u062a\u0646\u062a\u062c \u0627\u0644\u0646\u0645\u0648\u0630\u062c \u0628\u0623\u0642\u0644 \u0642\u064a\u0645\u0629 AIC.<\/span><\/p>\n<p style=\";text-align:right;direction:rtl\"> <span style=\"color: #000000;\">\u062a\u0633\u062a\u062e\u062f\u0645 \u0647\u0630\u0647 \u0627\u0644\u0648\u0638\u064a\u0641\u0629 \u0628\u0646\u0627\u0621 \u0627\u0644\u062c\u0645\u0644\u0629 \u0627\u0644\u0623\u0633\u0627\u0633\u064a \u0627\u0644\u062a\u0627\u0644\u064a:<\/span><\/p>\n<p style=\";text-align:right;direction:rtl\"> <span style=\"color: #000000;\"><strong>stepAIC (\u0643\u0627\u0626\u0646\u060c \u0627\u062a\u062c\u0627\u0647\u060c &#8230;)<\/strong><\/span><\/p>\n<p style=\";text-align:right;direction:rtl\"> <span style=\"color: #000000;\">\u0630\u0647\u0628:<\/span><\/p>\n<ul style=\";text-align:right;direction:rtl\">\n<li style=\";text-align:right;direction:rtl\"> <span style=\"color: #000000;\"><strong>\u0627\u0644\u0643\u0627\u0626\u0646<\/strong> : \u0627\u0633\u0645 \u0627\u0644\u0646\u0645\u0648\u0630\u062c \u0627\u0644\u0645\u0639\u062f\u0644<\/span><\/li>\n<li style=\";text-align:right;direction:rtl\"> <span style=\"color: #000000;\"><strong>\u0627\u0644\u0627\u062a\u062c\u0627\u0647<\/strong> : \u0646\u0648\u0639 \u0627\u0644\u0628\u062d\u062b \u0627\u0644\u0645\u0631\u062d\u0644\u064a \u0627\u0644\u0645\u0637\u0644\u0648\u0628 \u0627\u0633\u062a\u062e\u062f\u0627\u0645\u0647 (&#8220;\u0644\u0644\u062e\u0644\u0641&#8221; \u0623\u0648 &#8220;\u0644\u0644\u0623\u0645\u0627\u0645&#8221; \u0623\u0648 &#8220;\u0643\u0644\u0627\u0647\u0645\u0627&#8221;)<\/span><\/li>\n<\/ul>\n<p style=\";text-align:right;direction:rtl\"> <span style=\"color: #000000;\">\u064a\u0648\u0636\u062d \u0627\u0644\u0645\u062b\u0627\u0644 \u0627\u0644\u062a\u0627\u0644\u064a \u0643\u064a\u0641\u064a\u0629 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0647\u0630\u0647 \u0627\u0644\u0648\u0638\u064a\u0641\u0629 \u0639\u0645\u0644\u064a\u064b\u0627.<\/span><\/p>\n<h2 style=\";text-align:right;direction:rtl\"> <span style=\"color: #000000;\"><strong>\u0645\u062b\u0627\u0644: \u0627\u0633\u062a\u062e\u062f\u0627\u0645 stepAIC() \u0644\u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u064a\u0632\u0629 \u0641\u064a R<\/strong><\/span><\/h2>\n<p style=\";text-align:right;direction:rtl\"> <span style=\"color: #000000;\">\u0641\u064a \u0647\u0630\u0627 \u0627\u0644\u0645\u062b\u0627\u0644\u060c \u0633\u0646\u0633\u062a\u062e\u062f\u0645 \u0645\u062c\u0645\u0648\u0639\u0629 \u0628\u064a\u0627\u0646\u0627\u062a <a href=\"https:\/\/statorials.org\/ar\/\u0645\u062c\u0645\u0648\u0639\u0629-\u0628\u064a\u0627\u0646\u0627\u062a-mtcars-r\/\" target=\"_blank\" rel=\"noopener\">mtcars<\/a> \u0627\u0644\u0645\u0636\u0645\u0646\u0629 \u0641\u064a R\u060c \u0648\u0627\u0644\u062a\u064a \u062a\u062d\u062a\u0648\u064a \u0639\u0644\u0649 \u0642\u064a\u0627\u0633\u0627\u062a \u0644\u0640 11 \u0633\u0645\u0629 \u0645\u062e\u062a\u0644\u0641\u0629 \u0644\u0640 32 \u0633\u064a\u0627\u0631\u0629 \u0645\u062e\u062a\u0644\u0641\u0629:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #008080;\"><strong>#view first six rows of mtcars dataset<\/strong><\/span>\n<strong>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 style=\";text-align:right;direction:rtl\"> <span style=\"color: #000000;\">\u0644\u0646\u0641\u062a\u0631\u0636 \u0623\u0646\u0646\u0627 \u0646\u0631\u064a\u062f \u0645\u0644\u0627\u0621\u0645\u0629 \u0646\u0645\u0648\u0630\u062c \u0627\u0644\u0627\u0646\u062d\u062f\u0627\u0631 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 <strong>hp<\/strong> \u0643\u0645\u062a\u063a\u064a\u0631 \u0627\u0644\u0627\u0633\u062a\u062c\u0627\u0628\u0629 \u0648\u0645\u062a\u063a\u064a\u0631\u0627\u062a \u0627\u0644\u062a\u0648\u0642\u0639 \u0627\u0644\u0645\u062d\u062a\u0645\u0644\u0629 \u0627\u0644\u062a\u0627\u0644\u064a\u0629:<\/span><\/p>\n<ul style=\";text-align:right;direction:rtl\">\n<li style=\";text-align:right;direction:rtl\"> <span style=\"color: #000000;\"><strong>\u0645\u064a\u0644\u0627 \u0641\u064a \u0627\u0644\u063a\u0627\u0644\u0648\u0646<\/strong><\/span><\/li>\n<li style=\";text-align:right;direction:rtl\"> <span style=\"color: #000000;\"><strong>\u0648\u0632\u0646<\/strong><\/span><\/li>\n<li style=\";text-align:right;direction:rtl\"> <span style=\"color: #000000;\"><strong>\u0627\u0644\u0642\u0631\u0641<\/strong><\/span><\/li>\n<li style=\";text-align:right;direction:rtl\"> <span style=\"color: #000000;\"><strong>com.qsec<\/strong><\/span><\/li>\n<\/ul>\n<p style=\";text-align:right;direction:rtl\"> <span style=\"color: #000000;\">\u064a\u0645\u0643\u0646\u0646\u0627 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u062f\u0627\u0644\u0629 <strong>stepAIC()<\/strong> \u0645\u0646 \u0627\u0644\u062d\u0632\u0645\u0629 <b>MASS<\/b> \u0644\u0625\u0636\u0627\u0641\u0629 \u0648\u0637\u0631\u062d \u0645\u062a\u063a\u064a\u0631\u0627\u062a \u0627\u0644\u062a\u0648\u0642\u0639 \u0627\u0644\u0645\u062e\u062a\u0644\u0641\u0629 \u0645\u0646 \u0627\u0644\u0646\u0645\u0648\u0630\u062c \u062d\u062a\u0649 \u0646\u0635\u0644 \u0625\u0644\u0649 \u0627\u0644\u0646\u0645\u0648\u0630\u062c \u0628\u0623\u0642\u0644 \u0642\u064a\u0645\u0629 AIC \u0645\u0645\u0643\u0646\u0629:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008000;\">library<\/span> (MASS)\n\n<span style=\"color: #008080;\">#fit initial multiple linear regression model\n<\/span>model &lt;- lm(hp ~ mpg + wt + drat + qsec, data=mtcars)\n\n<span style=\"color: #008080;\">#use both forward and backward selection to find model with lowest AIC\n<\/span>stepAIC(model, direction=\" <span style=\"color: #ff0000;\">both<\/span> \")\n\nStart: AIC=226.88\nhp ~ mpg + wt + drat + qsec\n\n       Df Sum of Sq RSS AIC\n- drat 1 94.9 28183 224.98\n- mpg 1 1519.4 29608 226.56\n  none 28088 226.88\n- wt 1 3861.9 31950 229.00\n-qsec 1 28102.2 56190 247.06\n\nStep: AIC=224.98\nhp ~ mpg + wt + qsec\n\n       Df Sum of Sq RSS AIC\n- mpg 1 1424.5 29608 224.56\n  none 28183 224.98\n+ drat 1 94.9 28088 226.88\n- wt 1 3797.9 31981 227.03\n-qsec 1 29625.1 57808 245.97\n\nStep: AIC=224.56\nhp ~ wt + qsec\n\n       Df Sum of Sq RSS AIC\n  none 29608 224.56\n+ mpg 1 1425 28183 224.98\n+ drat 1 0 29608 226.56\n- wt 1 43026 72633 251.28\n-qsec 1 52881 82489 255.35\n\nCall:\nlm(formula = hp ~ wt + qsec, data = mtcars)\n\nCoefficients:\n(Intercept) wt qsec  \n     441.26 38.67 -23.47  \n<\/strong><\/span><\/pre>\n<p style=\";text-align:right;direction:rtl\"> <span style=\"color: #000000;\">\u0648\u0625\u0644\u064a\u0643 \u0643\u064a\u0641\u064a\u0629 \u062a\u0641\u0633\u064a\u0631 \u0627\u0644\u0646\u062a\u064a\u062c\u0629:<\/span><\/p>\n<p style=\";text-align:right;direction:rtl\"> <span style=\"color: #000000;\"><strong>(1)<\/strong> \u0623\u0648\u0644\u0627\u064b\u060c \u0646\u0628\u062f\u0623 \u0628\u062a\u0631\u0643\u064a\u0628 \u0646\u0645\u0648\u0630\u062c \u0627\u0644\u0627\u0646\u062d\u062f\u0627\u0631 \u0645\u0639 \u0627\u0644\u0645\u062a\u063a\u064a\u0631\u0627\u062a \u0627\u0644\u0623\u0631\u0628\u0639\u0629 \u0627\u0644\u0645\u062a\u0648\u0642\u0639\u0629. \u064a\u062d\u062a\u0648\u064a \u0647\u0630\u0627 \u0627\u0644\u0646\u0645\u0648\u0630\u062c \u0639\u0644\u0649 \u0642\u064a\u0645\u0629 AIC \u062a\u0628\u0644\u063a <strong>226.88<\/strong> .<\/span><\/p>\n<p style=\";text-align:right;direction:rtl\"> <span style=\"color: #000000;\"><strong>(2)<\/strong> \u0628\u0639\u062f \u0630\u0644\u0643\u060c \u064a\u062d\u062f\u062f stepAIC \u0623\u0646 \u0625\u0632\u0627\u0644\u0629 <strong>drat<\/strong> \u0643\u0645\u062a\u063a\u064a\u0631 \u0645\u062a\u0648\u0642\u0639 \u0633\u064a\u0624\u062f\u064a \u0625\u0644\u0649 \u062a\u0642\u0644\u064a\u0644 \u0642\u064a\u0645\u0629 AIC \u0625\u0644\u0649 <strong>224.98<\/strong> .<\/span><\/p>\n<p style=\";text-align:right;direction:rtl\"> <span style=\"color: #000000;\"><strong>(3)<\/strong> \u0628\u0639\u062f \u0630\u0644\u0643\u060c \u064a\u062d\u062f\u062f \u0646\u0645\u0648\u0630\u062c stepAIC \u0623\u0646 \u0625\u0632\u0627\u0644\u0629 <strong>\u0645\u064a\u0644\u0627<\/strong> \u0641\u064a \u0627\u0644\u063a\u0627\u0644\u0648\u0646 \u0643\u0645\u062a\u063a\u064a\u0631 \u0645\u062a\u0648\u0642\u0639 \u0633\u064a\u0624\u062f\u064a \u0625\u0644\u0649 \u062a\u0642\u0644\u064a\u0644 \u0642\u064a\u0645\u0629 AIC \u0625\u0644\u0649 <strong>224.56<\/strong> .<\/span><\/p>\n<p style=\";text-align:right;direction:rtl\"> <span style=\"color: #000000;\"><strong>(4)<\/strong> \u0623\u062e\u064a\u0631\u064b\u0627\u060c \u064a\u062d\u062f\u062f stepAIC \u0623\u0646\u0647 \u0644\u0627 \u062a\u0648\u062c\u062f \u0637\u0631\u064a\u0642\u0629 \u0644\u0645\u0632\u064a\u062f \u0645\u0646 \u062a\u0642\u0644\u064a\u0644 \u0642\u064a\u0645\u0629 AIC \u0639\u0646 \u0637\u0631\u064a\u0642 \u0625\u0636\u0627\u0641\u0629 \u0623\u0648 \u0625\u0632\u0627\u0644\u0629 \u0627\u0644\u0645\u062a\u063a\u064a\u0631\u0627\u062a.<\/span><\/p>\n<p style=\";text-align:right;direction:rtl\"> <span style=\"color: #000000;\">\u0648\u0628\u0627\u0644\u062a\u0627\u0644\u064a \u0641\u0625\u0646 \u0627\u0644\u0646\u0645\u0648\u0630\u062c \u0627\u0644\u0646\u0647\u0627\u0626\u064a \u0647\u0648:<\/span><\/p>\n<p style=\";text-align:right;direction:rtl\"> <span style=\"color: #000000;\"><strong>\u062d\u0635\u0627\u0646 = 441.26 + 38.67 (\u0627\u0644\u0648\u0632\u0646) &#8211; 23.47 (\u0642\u0637\u0629 \u062b\u0627\u0646\u064a\u0629)<\/strong><\/span><\/p>\n<p style=\";text-align:right;direction:rtl\"> <span style=\"color: #000000;\">\u064a\u062d\u062a\u0648\u064a \u0647\u0630\u0627 \u0627\u0644\u0646\u0645\u0648\u0630\u062c \u0639\u0644\u0649 \u0642\u064a\u0645\u0629 AIC \u062a\u0628\u0644\u063a <strong>224.56<\/strong> .<\/span><\/p>\n<h2 style=\";text-align:right;direction:rtl\"> <span style=\"color: #000000;\"><strong>\u0645\u0635\u0627\u062f\u0631 \u0625\u0636\u0627\u0641\u064a\u0629<\/strong><\/span><\/h2>\n<p style=\";text-align:right;direction:rtl\"> <span style=\"color: #000000;\">\u062a\u0634\u0631\u062d \u0627\u0644\u0628\u0631\u0627\u0645\u062c \u0627\u0644\u062a\u0639\u0644\u064a\u0645\u064a\u0629 \u0627\u0644\u062a\u0627\u0644\u064a\u0629 \u0643\u064a\u0641\u064a\u0629 \u062a\u0646\u0641\u064a\u0630 \u0627\u0644\u0645\u0647\u0627\u0645 \u0627\u0644\u0634\u0627\u0626\u0639\u0629 \u0627\u0644\u0623\u062e\u0631\u0649 \u0641\u064a R:<\/span><\/p>\n<p style=\";text-align:right;direction:rtl\"> <span style=\"color: #000000;\"><a href=\"https:\/\/statorials.org\/ar\/\u0627\u0644\u0627\u0646\u062d\u062f\u0627\u0631-\u0627\u0644\u062e\u0637\u064a-\u0627\u0644\u0645\u062a\u0639\u062f\u062f-\u0635\/\" target=\"_blank\" rel=\"noopener\">\u0643\u064a\u0641\u064a\u0629 \u0625\u062c\u0631\u0627\u0621 \u0627\u0644\u0627\u0646\u062d\u062f\u0627\u0631 \u0627\u0644\u062e\u0637\u064a \u0627\u0644\u0645\u062a\u0639\u062f\u062f \u0641\u064a R<\/a><br \/> <a href=\"https:\/\/statorials.org\/ar\/\u0627\u0644\u0627\u0646\u062d\u062f\u0627\u0631-\u0627\u0644\u062c\u0632\u064a\u0654\u064a-\u0641\u064a-\u0635\/\" target=\"_blank\" rel=\"noopener\">\u0643\u064a\u0641\u064a\u0629 \u0625\u062c\u0631\u0627\u0621 \u0627\u0644\u0627\u0646\u062d\u062f\u0627\u0631 \u0627\u0644\u062c\u0632\u0626\u064a \u0641\u064a R<\/a><br \/> <a href=\"https:\/\/statorials.org\/ar\/\u0627\u0646\u062d\u062f\u0627\u0631-\u0627\u0644\u062e\u0637-\u0641\u064a-\u0635\/\" target=\"_blank\" rel=\"noopener\">\u0643\u064a\u0641\u064a\u0629 \u0625\u062c\u0631\u0627\u0621 \u0627\u0644\u0627\u0646\u062d\u062f\u0627\u0631 \u0627\u0644\u062e\u0637\u064a \u0641\u064a R<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0645\u0639\u064a\u0627\u0631 \u0627\u0644\u0645\u0639\u0644\u0648\u0645\u0627\u062a Akaike ( AIC ) \u0647\u0648 \u0645\u0642\u064a\u0627\u0633 \u064a\u0633\u062a\u062e\u062f\u0645 \u0644\u062a\u062d\u062f\u064a\u062f \u0645\u062f\u0649 \u0645\u0644\u0627\u0621\u0645\u0629 \u0627\u0644\u0646\u0645\u0648\u0630\u062c \u0644\u0645\u062c\u0645\u0648\u0639\u0629 \u0627\u0644\u0628\u064a\u0627\u0646\u0627\u062a. \u064a\u062a\u0645 \u062d\u0633\u0627\u0628\u0647 \u0639\u0644\u0649 \u0627\u0644\u0646\u062d\u0648 \u0627\u0644\u062a\u0627\u0644\u064a: AIC = 2K \u2013 2 \u0644\u062a\u0631 (L) \u0630\u0647\u0628: K: \u0639\u062f\u062f \u0645\u0639\u0644\u0645\u0627\u062a \u0627\u0644\u0646\u0645\u0648\u0630\u062c. \u0627\u0644\u0642\u064a\u0645\u0629 \u0627\u0644\u0627\u0641\u062a\u0631\u0627\u0636\u064a\u0629 \u0644\u0640 K \u0647\u064a 2\u060c \u0648\u0628\u0627\u0644\u062a\u0627\u0644\u064a \u0641\u0625\u0646 \u0627\u0644\u0646\u0645\u0648\u0630\u062c \u0627\u0644\u0630\u064a \u064a\u062d\u062a\u0648\u064a \u0639\u0644\u0649 \u0645\u062a\u063a\u064a\u0631 \u062a\u0648\u0642\u0639 \u0648\u0627\u062d\u062f \u0641\u0642\u0637 \u0633\u064a\u0643\u0648\u0646 \u0644\u0647 \u0642\u064a\u0645\u0629 K \u0647\u064a 2+1 = [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u0643\u064a\u0641\u064a\u0629 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 stepAIC \u0641\u064a R \u0644\u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u064a\u0632\u0629 - 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content=\"\u0643\u064a\u0641\u064a\u0629 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 stepAIC \u0641\u064a R \u0644\u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u064a\u0632\u0629 - \u0627\u0644\u0625\u062d\u0635\u0627\u0626\u064a\u0627\u062a\" \/>\n<meta property=\"og:description\" content=\"\u064a\u0634\u0631\u062d \u0647\u0630\u0627 \u0627\u0644\u0628\u0631\u0646\u0627\u0645\u062c \u0627\u0644\u062a\u0639\u0644\u064a\u0645\u064a \u0643\u064a\u0641\u064a\u0629 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0648\u0638\u064a\u0641\u0629 stepAIC \u0641\u064a R \u0644\u0625\u062c\u0631\u0627\u0621 \u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u0646\u0645\u0648\u0630\u062c \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 AIC\u060c \u0645\u0639 \u0645\u062b\u0627\u0644.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/ar\/\u0633\u062a\u064a\u0628\u064a\u0643-\u0635\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta 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