Pk f(Pk) f(Pk) calc. 0 0.4 0.3998 0.25 0.4 0.40104297 0.5 0.75 0.7450125 0.6 0.8 0.8040511 0.75 0.82 0.82308359 0.9 0.83 0.8264166 1 0.85 0.8491 1.1 0.88 0.8850932 1.2 0.9 0.90009613 1.34 0.73673351 0 0.2 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 f(x) = − 8.36961 x⁵ + 0.399849 R² = 0.999714335378
