# Question: Refer to the data in Exercise 11 47 a Refit the regression

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

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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