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Table 2 Minimum recommended values for acceptable QSAR model

From: Computational modeling, ligand-based drug design, drug-likeness and ADMET properties studies of series of chromen-2-ones analogues as anti-cancer agents

Symbol Name Threshold limit Model 1 Model 2 Model 3 Model 4
LOF Friedman’s lack of fit Low value 0.016488 0.01648900 0.01683500 0.01705300
R2 Co-efficient of determination of the training set  ≥ 0.6 0.94794 0.94793800 0.94684500 0.94615500
Radj2 Adjusted R-squared  ≥ 0.6 0.935 0.93544300 0.93408800 0.93323200
Q2 Cross-validation coefficient  ≥ 0.5 0.912 0.91105100 0.90975700 0.90712400
R2-Q2 Difference between R2 and Q2  < 0.3 0.012494 0.036887 0.037088 0.039031