Question

X | Y

0 | 15
5 | 10
10 | 5
15 | 0

What is the correlation coefficient for the data shown in the table?

A: 1
B: -1
C: 5
D: 10

Answer 1

The answer should be c

Answer 2

B: -1

Explanation:

Here as the value of X is increasing, the value of Y is get decreased. Thus Negative Correlation is exist here.

Also, if we notice here the values of both the observation are just reciprocal.

Thus, the Value of Correlation Coefficient is exact -1.

The Correlation Coefficient is the strength and direction of relationship between two variables. And its value lie between -1 to +1.