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Table 1 Pearson coefficient ranges and interpretations

From: Machine learning techniques to predict daily rainfall amount

Pearson coefficient |r| Interpretation
0.00 < 0.10 Negligible
0.10 < 0.20 Weak
0.20 < 0.40 Moderate
0.40 < 0.60 Relatively strong
0.60 < 0.80 Strong
0.80 < 1.00 Very strong