Table 6 The 2FI model statistical parameters.

From: Investigation on process optimization and kinetics for leaching of rare earth elements from red mud using citric acid

Statistical parameters

Values

Standard deviation

0.7608

Mean

11.90

Coefficient of variance (C.V) %

6.39

R2

0.9794

Adjusted R2

0.9699

Predicted R2

0.9236

Adequate precision

37.7929

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