Which of the following correlation coefficients reflects the strongest meaningful relationship?
A) +0.67
B) 0.00
C) −0.86
D) +1.25

Question

Quizplus · Accepted Answer

The correlation coefficient measures the strength and direction of a linear relationship between two variables on a scatterplot. The value of a correlation coefficient ranges from -1 to +1. A value of +1 indicates a perfect positive linear relationship, -1 indicates a perfect negative linear relationship, and 0 indicates no linear relationship. Therefore, -0.86 reflects the strongest meaningful relationship among the given options because its absolute value is closest to 1. Option D, +1.25, is not a valid correlation coefficient because it falls outside the possible range of -1 to +1.

Which of the Following Correlation Coefficients Reflects the Strongest Meaningful