If the correlation coefficient (r)= 1.00,then
A) all the data points must fall exactly on a straight line with a positive slope.
B) all the data points must fall exactly on a horizontal straight line with a zero slope.
C) all the data points must fall exactly on a straight line with a negative slope.
D) all the data points must fall exactly on a straight line with a slope that equals 1.00.

Question

Quizplus · Accepted Answer

A correlation coefficient of 1.00 indicates a perfect positive relationship between two variables. This means that as one variable increases, the other variable also increases in a perfectly linear fashion. Therefore, all the data points must fall exactly on a straight line with a positive slope.

If the Correlation Coefficient (R)= 1.00,then