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How are r and r 2 interpreted?

How are r and r 2 interpreted?

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Answer #1

The value of r (Correlation coefficient) is always between +1 and –1.
r interpreation is depends upon r value
Exactly –1. A perfect (negative) linear relationship

–0.70. A strong (negative) linear relationship

–0.50. A moderate (negative) relationship

–0.30. A weak (negative) linear relationship

0. No linear relationship

+0.30. A weak (positive) linear relationship

+0.50. A moderate (positive) relationship

+0.70. A strong (positive) linear relationship

Exactly +1. A perfect (positive) linear relationship

R^2 is interpreted as the proportion of response variation "explained" by the regressors/independent variable in the model.

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