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Model and scatter of the tablets of training set ROUND. Horizontal axis: the sum of: −1.56 − (0.05 × resistance to crushing) + (1.04× diameter) + (5.16 × score mark) − (0.82 × thickness) − (0.90 × shape). Also shown: horizontal line ease of subdivision = 0.800, being the cut-off value for an acceptable ease of subdivision
