| 0.90–1.00 (−0.9 to −1.00) | Very high positive (negative) correlation |
| 0.70–0.90 (−0.70 to −0.90) | High positive (negative) correlation |
| 0.50–0.70 (−0.50 to −0.70) | Moderate positive (negative) correlation |
| 0.30–0.50 (−0.30 to −0.50) | Low positive (negative) correlation |
| 0.00–0.30 (0.00 to −0.30) | Negligible correlation |
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