Dr. English develops a test that she believes will predict the academic success of college freshmen. Dr. English finds a correlation coefficient of .70 between high-school seniors' scores on the test and their freshman GPAs one year later. What can one conclude regarding Dr. English's test?
A)It is not reliable.
B)It is reasonably reliable.
C)It is not valid.
D)It is reasonably valid.

Question

Quizplus · Accepted Answer

The correlation coefficient of .70 indicates a moderate to strong positive relationship between the test scores and freshman GPA. Therefore, the test is reasonably valid in predicting academic success. However, without additional information, it is impossible to determine the reliability of the test.

Dr English Develops a Test That She Believes Will Predict