Which of these correlation coefficients allows a perfect prediction of scores on one variable from knowledge of scores on the other variable?
A) -1.00
B) 0
C) 0.50
D) 2.00

Question

Quizplus · Accepted Answer

A correlation coefficient of -1.00 indicates a perfect negative correlation between the two variables, meaning that as one variable increases, the other variable decreases in a perfectly predictable manner. Therefore, if we know the score on one variable, we can predict the score on the other variable with absolute certainty.

Which of These Correlation Coefficients Allows a Perfect Prediction of Scores