The primary purpose of stratified sampling is to make the sampling process ____________.
A) more convenient
B) more economical
C) less biased
D) more accurate
Question 2
The ________ measures how consistent the slope of the regression equation would be if several sets of samples from the population were selected and the regression equation were derived for each of them.
A) correlation coefficient
B) coefficient of determination
C) standard error of the slope
D) standard error of the estimate