Which one of the following statements about the sample correlation coefficient is true?
A)It is always a value between 0 and 1.
B)The represents the proportion of observed variation in the dependent variable that is explained by the fitted regression model.
C)It is measured in the same units as the dependent variable.
D)It is measured in the same units as the independent variable.
E)It is a unitless measurement.

Question

Quizplus · Accepted Answer

The sample correlation coefficient, denoted by the symbol r, is a unitless measure that ranges from -1 to +1. It is a measure of the strength and direction of the linear relationship between two variables. It is not measured in the same units as either the independent or dependent variable, and it does not represent the proportion of observed variation in the dependent variable that is explained by the fitted regression model.

Which One of the Following Statements About the Sample Correlation