Evaluation of weighted regression and sample size in developing a taper model for loblolly pine

Abstract

A stem profile model, fit using pseudo-likelihood weighted regression, was used to estimate merchantable volume of loblolly pine (Pinus taeda L.) in the southeast. The weighted regression increased model fit marginally, but did not substantially increase model performance. In all cases, the unweighted regression models performed as well as the weighted regression models, even for very small sample sizes.

Citation

Cormier, Kenneth L.; Reich, Robin M.; Czaplewski, Raymond L.; Bechtold, William A. 1992. Evaluation of weighted regression and sample size in developing a taper model for loblolly pine. Forest Ecology and Management. 53: 65-76.