Question

What are the r- values of the following data to three decimal places?

A. 0.811
B. 0.901
C. -0.811
D. -0.901

Answer 1

Option D. -0.901

Explanation:

we know that

The correlation coefficient r measures the strength and direction of a linear relationship between two variables. The value of r is always between +1 and –1

Using a Excel tool (Correl function)

The value of coefficient r is -0.9006876

Round to three decimal places

r=-0.901

see the table attached