The strength of the linear relationship between two interval variables can be measured by the:
A)coefficient of variation.
B)coefficient of correlation.
C)slope of the regression line.
D)Y-intercept.

Question

Quizplus · Accepted Answer

The coefficient of correlation, also known as Pearson's correlation coefficient, measures the strength and direction of the linear relationship between two interval variables. It ranges from -1 to +1, with values closer to -1 indicating a strong negative association and values closer to +1 indicating a strong positive association. A value of 0 indicates no linear association. The other options (A, C, D) are not measures of the strength of the linear relationship.

The Strength of the Linear Relationship Between Two Interval Variables