Author Question: If, in a correlational study, a researcher calculates the correlation coefficient to be r = +.5, ... (Read 144 times)

waynest · **on:** Jun 20, 2018

If, in a correlational study, a researcher calculates the correlation coefficient to be r = +.5, what would the coefficient of determination indicate?

a. The results suggest that 50 of the total variance is being shared by the two variables.
b. The results suggest that 25 of the total variance is being shared by the two variables.
c. The results suggest that 5 of the total variance is being shared by the two variables.
d. The results suggest that .25 of the total variance is being shared by the two variables.

Question 2

Variability resulting from individual differences among research subjects is referred to as

a. systematic variance.
b. error variance.
c. analysis of variance.
d. none of the above