After grading the first exam, your developmental psychology instructor says, "Those students who actually came to class did much better than those of you who showed up once a week." Given this information, you would suspect that the correlation between attendance and grades would be closest to ____.
A)+.09
B)+ 0.9
C)+ 9.0
D)+ 90.0

Question

Quizplus · Accepted Answer

A correlation coefficient of +0.9 is a strong positive correlation, which suggests that there is a close relationship between attendance and grades. The statement from the instructor indicates that students who attended class more frequently did better on the exam, which is consistent with a strong positive correlation. A correlation coefficient of +0.09 or less would suggest a weaker relationship or no relationship between attendance and grades. Correlation coefficients cannot exceed +1.0 or -1.0, so choices C and D are not possible values for this correlation.

After Grading the First Exam, Your Developmental Psychology Instructor Says