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--- c:ma:2019:multiple_regression_exercise [2019/11/08 10:42] – [Ex. 2] hkimscil
+++ c:ma:2019:multiple_regression_exercise [2019/11/08 10:46] – [Ex. 2] hkimscil
@@ Line 78: / Line 78: @@
 F-statistic: 7.738 on 1 and 395 DF,  p-value: 0.005667
 </code>
+<code>> lm.sal.rank <- lm(salary ~ rank, data=Salaries)
+> summary(lm.sal.rank)
+Call:
+lm(formula = salary ~ rank, data = Salaries)
+Residuals:
+   Min     1Q Median     3Q    Max
+-68972 -16376  -1580  11755 104773
+Coefficients:
+              Estimate Std. Error
+(Intercept)      80776       2887
+rankAssocProf    13100       4131
+rankProf         45996       3230
+              t value Pr(>|t|)
+(Intercept)    27.976  < 2e-16 ***
+rankAssocProf   3.171  0.00164 **
+rankProf       14.238  < 2e-16 ***
+---
+Signif. codes:
+‘***’ 0.001 ‘**’ 0.01 ‘*’
+.05 ‘.’ 0.1 ‘ ’ 1
+Residual standard error: 23630 on 394 degrees of freedom
+Multiple R-squared:  0.3943,	Adjusted R-squared:  0.3912
+F-statistic: 128.2 on 2 and 394 DF,  p-value: < 2.2e-16
+> </code>
 ====== Discussion ======
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