Question

Sketch the scatter plot of the following that shows

1. Strong positive correlation

2. Weak positive correlation

3. Perfect negative correlation

4. No correlation

Answer 1

Strong positive correlation :

The relationship between two variables is generally considered strong when their r value is larger than 0.7.

weak positive correlation :

0.3 < r <0.5 is considered as weak positive correlation:

A perfect negative correlation is given the value of -1.

If there is absolutely no correlation present the value given is 0.