The Steven’s method The midpoint method The specimen method
AICc value liner equation 336.31 390.73 380.71
quadratic equation 311.53 362.60 369.02
cubic equation 300.60 358.99 371.45
liner equation 0.41 0.05 0.02
quadratic equation 0.80 0.71 0.44
cubic equation 0.88 0.78 0.45