Refer to the data in Exercise 11.47.
a. Refit the regression model with the data value (14, 97.9) removed. How large were the changes in the slope and residual standard deviation?
b. Compute the correlation coefficient with the data value (14, 97.9) removed. How large was the change in the correlation coefficient compared with the value computed from all the data?
c. Compute the Spearman rank correlation coefficient for the complete data set and for the data set with the value (14, 97.9) removed.
d. Was the change in the Spearman rank correlation coefficient larger or smaller than the change in the standard correlation coefficient?
In exercise

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EXPER85 51 4 3 330 13 14 10 2 SALARY 113.9 112.5 109 1251 116 112.7 104.5 100.1 1011 126.9 97.9 1135 98.3 EXPER 2 5 13 1 5 15 57 4 3 3 7 SALARY 97.2 111.3 124.7 105.3 107 103.8 1074 100.2 1128 100.7 107.3 103.7 1218 EXPER 796 6 4 65 1 13 1 624 SALARY 111.7 116.2 108.9 119 96.1 113.5 1104 987 120.1 98.9 108.4 110.6 1018 EXPER15 42 7511 0 6 SALARY 104.4 106.6 103.9 105 979 104.6 106.9 1076 103.2 1016 99.2 1017 120.1