Question

Which statement is FALSE about correlation coefficients?

r will be somewhere between -1 and 1.


If r = 1, that is a strong correlation.


If r = 0, that is a weak correlation.


If r = -1, that is a weak correlation.

Answer 1

If r = -1, that is a weak correlation.

Explanation:

The correlation coefficient lies between -1 and 1.

1 means perfect positive correlation, i.e. if X increases, Y increases

0 means the variables are not correlated

-1 means perfect negative correlation, i.e. if X increases, Y decreases. Even if they behave in opposite ways, the variable are still correlated!