# Stochastic Models to Qualify Stem Tapers
## 4 Discussion
### Final Fitting
\begin{table}
\begin{tabular}{c c c c c c c c c c c c c} \hline \hline \multirow{2}{*}{**Model**} & B & **AB** & **RMSE** & **B** & **AB** & **RMSE** & **RMSE** & **B** & **AB** & **RMSE** & **R2** \\  & **(\%)** & **(\%)** & **(\%)** & **(\%)** & **(\%)** & **(\%)** & **(\%)** & **(\%)** & **(\%)** & **(\%)** & **(\%)** & **(\%)** & **(\%)** \\ \hline \multicolumn{10}{c}{**Oak**} & \multicolumn{10}{c}{**Ash**} & \multicolumn{10}{c}{**Birch**} \\ \multirow{2}{*}{**1**} & \(-0.050\) & \(0.800\) & \(1.275\) & \(0.985\) & \(-0.055\) & \(0.641\) & \(0.966\) & \(0.986\) & \(-0.048\) & \(1.021\) & \(1.641\) & \multirow{2}{*}{\(0.974\)} \\  & (\(-0.19\)) & (\(5.13\)) & (\(8.18\)) & \(0.985\) & \((-0.43)\) & \((5.00)\) & \((7.53)\) & & & \(-0.030\) & \((6.29)\) & \((10.11)\) & \\ \hline \multirow{2}{*}{**3**} & \(0.000\) & \(0.958\) & \(1.498\) & \(0.979\) & \(-0.040\) & \(0.860\) & \(1.379\) & \(0.971\) & \(-0.053\) & \(1.201\) & \(1.855\) & \multirow{2}{*}{\(0.967\)} \\  & (\(0.00\)) & (\(6.15\)) & (\(9.61\)) & \((-0.31)\) & (\(6.71\)) & (\(10.75\)) & & & & & \\ \hline \multirow{2}{*}{**10**} & \(0.000\) & \(0.971\) & \(1.468\) & \(0.980\) & \(0.000\) & \(0.864\) & \(1.358\) & \(0.972\) & \(0.000\) & \(1.164\) & \(1.674\) & \multirow{2}{*}{\(0.973\)} \\  & (\(0.00\)) & (\(6.23\)) & (\(9.43\)) & \((0.943)\) & \((0.00)\) & \((6.74)\) & (\(10.59)\) & & & & & \\ \hline \multicolumn{10}{c}{**Black alder**} & \multicolumn{10}{c}{**White alder**} & \multicolumn{10}{c}{**Aspen**} & \multicolumn{10}{c}{**Aspen**} \\ \multirow{2}{*}{**1**} & \(-0.005\) & \(0.673\) & \(1.043\) & \(0.985\) & \(-0.007\) & \(0.563\) & \(0.860\) & \(0.988\) & \(-0.023\) & \(0.807\) & \(1.285\) & \multirow{2}{*}{\(0.985\)} \\  & (\(-0.03\)) & (\(4.33\)) & (\(6.71\)) & \((-0.06)\) & (\(-0.06)\) & (\(4.54\)) & (\(6.94\)) & & & & \\ \hline \multirow{2}{*}{**3**} & \(0.003\) & \(0.831\) & \(1.271\) & \(0.979\) & \(-0.006\) & \(0.719\) & \(1.150\) & \(0.978\) & \(-0.014\) & \(0.966\) & \(1.508\) & \multirow{2}{*}{\(0.979\)} \\  & (\(0.02\)) & (\(5.17\)) & (\(7.91\)) & \((-0.05)\) & (\(-0.05)\) & (\(5.80\)) & (\(9.28\)) & & & & \\ \hline \multirow{2}{*}{**10**} & \(0.000\) & \(0.864\) & \(1.275\) & \(0.979\) & \(0.000\) & \(0.735\) & \(1.124\) & \(0.979\) & \(0.000\) & \(0.979\) & \(1.480\) & \multirow{2}{*}{\(0.980\)} \\  & (\(0.00\)) & (\(5.38\)) & (\(7.94\)) & \((0.00)\) & (\(5.93\)) & (\(9.06\)) & & & & & \\ \hline \multicolumn{10}{c}{**Pine**} & \multicolumn{10}{c}{**Pine**} & \multicolumn{10}{c}{**Sprace**} & \multicolumn{10}{c}{**Sprace**} & \multicolumn{10}{c}{} \\ \multirow{2}{*}{**1**} & \(0.005\) & \(0.855\) & \(1.316\) & \(0.009\) & \(0.830\) & \(1.253\) & \(0.986\) & \(0.986\) & \(0.986\) & \multirow{2}{*}{\(0.985\)} \\  & (\(0.03\)) & (\(4.83\)) & (\(7.44\)) & \(0.986\) & (\(0.05\)) & (\(4.94\)) & (\(7.45\)) & & & & \\ \hline \multirow{2}{*}{**3**} & \(0.002\) & \(0.991\) & \(1.495\) & \(0.026\) & \(1.011\) & \(1.578\) & \(0.978\) & \(0.978\) & \multirow{2}{*}{\(0.979\)} \\  & (\(0.01\)) & (\(5.60\)) & (\(8.46\)) & \(0.982\) & (\(0.16\)) & (\(6.01\)) & (\(9.38\)) & & & & \\ \hline \multirow{2}{*}{**10**} & \(0.000\) & \(0.947\) & \(1.371\) & \(0.985\) & \(0.000\) & \(0.993\) & \(1.508\) & \(0.980\) & \(0.980\) & \multirow{2}{*}{\(0.980\)} \\  & (\(0.00\)) & (\(5.35\)) & (\(7.75\)) & \((0.00\)) & (\(5.90\)) & (\(8.96\)) & & & & \\ \hline \hline \end{tabular}
\end{table} 
Table 5: Statistical measures for all fitted stem diameter models.