What is the correlation coefficient with the following data points:
(1,6), (3,2), (7,5), (6,2)?

a.) 0.27
b.) -0.27
c.) 0.28
d.) -0.28

Option D → -0.28                                                                                Step-by-step explanation:

Given : Data points : (1,6), (3,2), (7,5), (6,2)

To find : What is the correlation coefficient with the following data points?

Solution :

Let x= 1,3,7,6

And y=6,2,5,2

N is the number of points i.e, N=4

The formula of correlation coefficient is

Now, we find term by term

Substitute all the values in the formula,

Therefore, The correlation coefficient is -0.28.

So, Option D is correct.

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step-by-step explanation: