问一道题：NO.PZ2015120204000002

问题如下：

Suppose that you deleted several of the observations that had small residual values. If you re-estimated the regression equation using this reduced sample, what would likely happen to the standard error of the estimate and the R-squared?

选项：

解释：

c is correct.

Deleting observations with small residuals will degrade the strength of the regression, resulting in an increase in the standard error and a decrease in R-squared.