If a researcher is trying to predict college grades, knowing high school grades, then
A)the predictor variable will be college grades
B)the criterion variable will be high school grades
C)the prediction will be poorer if only the top 20% of high school students are used than if they are all used
D)multiple regression rather than bivariate regression must be used

Question

Quizplus · Accepted Answer

The prediction will be poorer if only the top 20% of high school students are used because it restricts the range of the predictor variable, reducing variability and potentially weakening the correlation.

If a Researcher Is Trying to Predict College Grades, Knowing