Question

Which of these is not a possible r-value?

A. 0.25
B. 1.5
C. -0.1
D. -0.75

Answer 1

R value ranges from -1 (perfect negative correlation) to 1 (perfect positive correlation). So, the value 1.5 is out of range and it can't be a possible r value.

Answer 2

The correct option is B.

Explanation:

Here, r presents the Pearson correlation coefficient. The value of r lies from -1 to 1.

If r=-1 or near to -1, then it represents strong negative relation between two variables.

If r is near to -0.5, then it represents weak negative relation between two variables.

If r=0, then it represents no relation between two variables.

If r is near to 0.5, then it represents weak positive relation between two variables.

If r=1 or near to 1, then it represents strong positive relation between two variables.

Since the value of r can't be less than -1 and more than 1, therefore option B is correct because 1.5>1.