Table 4 Pearson’s correlation coefficients interpretation.

From: A novel neural network-based framework to estimate oil and gas pipelines life with missing input parameters

Coefficient

Interpretation

 ± 0.90– ± 1.00

Very strong

 ± 0.70– ± 0.89

Strong

 ± 0.40– ± 0.69

Moderate

 ± 0.10– ± 0.39

Weak

0.00– ± 0.09

Negligible