Question

A correlation coefficient will always have a value between what two values?

Answer 1

`-1` to `1`

Explanation:

Correlation coefficient is the measure of linear strength between two variables, and it can only take value form `-1` to `1`

Negative values implying a negative (downward) relationship, while positive values imply a positive (downhill) relationship.

The strength of relationship is given by magnitude of correlation, so correlation of `-1` and `1` represent perfect linear relationship.