Where there is a restricted range of values for one of two variables being measured
A) the correlation coefficient will be close to +/- 1.0.
B) the correlation coefficient may be close to zero even if the two variables are related.
C) the correlation coefficient will be negative.
D) the correlation coefficient will be positive.

Question

Quizplus · Accepted Answer

When there is a restricted range of values for one of the variables being measured, it can limit the variability that the correlation coefficient relies on to measure the strength and direction of a linear relationship between two variables. This restriction can lead to a correlation coefficient that is closer to zero, even if there is a meaningful relationship between the variables, because the measure is unable to fully capture the dynamics of their interaction due to the limited range of data.

Where There Is a Restricted Range of Values for One