Table 7. Statistics of residuals with the anamorphic and polymorphic equations fitted to the diameter at root collar of control plot.

Model types Model names Estimated coefficients MSE Std. Dev Skew-ness Kurtosis Shapiro-wilk
α β γ
Ana-morphic Schumacher - 4.0607 1.0434 0.0454 0.2125 0.3331 0.2698 0.977099
Chap-Rich - 0.2334 −1.4282 0.0456 0.2128 0.3459 0.2675 0.97702
Gompertz 0.0577 −0.9939 0.0522 0.2272 0.4885 0.3670 0.97645
Hossfeld - −4.0995 1.8641 0.0621 0.2364 0.1087 1.0250 0.9789
Poly-morphic Schumacher 5.4089 0.1268 - 0.0459 0.2139 0.4734 0.4507 0.977179
Chap-Rich −2.2174 1.0136 −2.4770 0.0621 0.2365 0.1918 0.2654 0.986884
Gompertz 6.5409 0.0402 0.00181 0.0459 0.2133 0.4186 0.3720 0.979206
Hossfeld 14.0856 - 0.7003 0.0462 0.2145 0.4483 0.3865 0.977896