If X and Y are transformed into z scores, and the slope of the regression line of the z scores is - 0.80, what is the value of the correlation coefficient?
A) - 0.80
B) 0.80
C) 0.40
D) - 0.40

Question

Quizplus · Accepted Answer

The correlation coefficient between two variables is equal to the slope of the regression line when both variables are converted into z scores. Therefore, if the slope of the regression line of the z scores is -0.80, the correlation coefficient is also -0.80.

If X and Y Are Transformed into Z Scores, and the Slope