If the mean and standard deviation for grade point average are 2.0 and .5, respectively, the mean and standard deviation for weight are 100 and 20 respectively, and the r between GPA and weight is .00, what would be the best prediction of GPA for a person weighing 120 pounds?
A) 1.5
B) 2.0
C) 2.5
D) Need to know error of estimate data

Question

Quizplus · Accepted Answer

Since the correlation coefficient (r) between GPA and weight is 0.00, there is no linear relationship between the two variables. Therefore, weight would not be a good predictor of GPA, and the best prediction for GPA would be the mean GPA of 2.0.

If the Mean and Standard Deviation for Grade Point Average