If two variables are perfectly correlated,then ____.
A)all data points fall on the regression line
B)the average error in predicting scores is very large
C)the standard error of estimate is very large
D)an increase in x leads to no change in Y

Question

Quizplus · Accepted Answer

If two variables are perfectly correlated, all the data points will fall on a straight line (regression line) with zero variability or error. This means that the value of one variable can perfectly predict the value of the other variable. Thus, there will be no error in predicting the scores, and an increase in x will always result in a corresponding increase in Y. Therefore, option A is the correct answer.

If Two Variables Are Perfectly Correlated,then ____