Question

Which of the following is a key advantage of using correlation in data analysis?

• A. The relationship between the variables is positive and linear.
• B. Both variables increase and decrease together.
• C. The relationship between the variables is positive and linear.
• D. It can quantify the strength and direction of a linear relationship between two variables.

Answer 1

Answer:

D. It can quantify the strength and direction of a linear relationship between two variables.

• This is the primary advantage of correlation.

• The correlation coefficient (r) provides a numerical value that indicates how strong the relationship is and whether it is positive or negative.