Table 1.
Interpretation of the Pearson's and Spearman's correlation coefficients.
| Correlation Coefficient | Dancey & Reidy (Psychology) | Quinnipiac University (Politics) | Chan YH (Medicine) | |
|---|---|---|---|---|
| +1 | −1 | Perfect | Perfect | Perfect |
| +0.9 | −0.9 | Strong | Very Strong | Very Strong |
| +0.8 | −0.8 | Strong | Very Strong | Very Strong |
| +0.7 | −0.7 | Strong | Very Strong | Moderate |
| +0.6 | −0.6 | Moderate | Strong | Moderate |
| +0.5 | −0.5 | Moderate | Strong | Fair |
| +0.4 | −0.4 | Moderate | Strong | Fair |
| +0.3 | −0.3 | Weak | Moderate | Fair |
| +0.2 | −0.2 | Weak | Weak | Poor |
| +0.1 | −0.1 | Weak | Negligible | Poor |
| 0 | 0 | Zero | None | None |