EurekaMag.com logo
+ Site Statistics
References:
48,252,460
Abstracts:
22,798,453
+ Resolve Accession
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
Submit PDF Full TextSubmit PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Estimating weights when fitting linear regression models for tree volume


, : Estimating weights when fitting linear regression models for tree volume. Canadian Journal of Forest Research 23(8): 1725-1731

The method of weighted least squares can be used to achieve homogeneity of variance with linear regression that has a heterogeneous error structure. A weight function commonly used when constructing regression equations to predict tree volume is (1/D-i-2H-i)-k!1, where k-1 apprxeq 1.0-2.1. This paper examines the weight function (1/D-i-k!2H-i-k!3)-k!1 for modelling the error structure in two loblolly pine (Pinus taeda L.) data sets and one white oak (Quercus alba L.) data set. The weight function (1/D-i-2.3H-i-0.7)-k!1 is recommended for all three data sets, for which the K-1 values ranged from 1.80 to 2.07.

Order PDF Full Text

Close
Close

Click here to order any other PDF Full Text


Accession: 002373069

DOI: 10.1139/x93-216

Download PDF Full Text: Estimating weights when fitting linear regression models for tree volume


Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:
Close
Close

Other references

Scheeres, D.E.; Mellinger, J.D.; Brasser, B.A.; Davis, A.T., 2004: Animate advanced laparoscopic courses improve resident operative performance. The use of animate training laboratories have been touted as an important part of a surgical resident's training. This study determines if there was any benefit in resident performance and whether that benefit persisted. Twelve senior surgica...

Rachinski, T., 1977: Breeding low-stalked varieties of wheat. The new low-stalked cv. of winter wheat Vega, from No. 3061-59 (No. 301 X S13) X Rannyaya 12 X N 314, ripens 10 days before Aurora and is highly resistant to powdery mildew [Erysiphe graminis] and brown rust [Puccinia recondita]. At present Vega i...

Morin, A., 2007: Self-awareness and the left hemisphere: the dark side of selectively reviewing the literature. Cortex; A Journal Devoted to the Study of the Nervous System and Behavior 43(8): 1068-73; Discussion 1074-82

Banziger R.; Pool W., 1972: Safety testing of pharmaceuticals. Cooper, Murray S (Ed ) Quality Control in The Pharmaceutical Industry, Vol 1 Xi+245p Illus Academic Press: New York, N Y , U S A ; London, England 155-176

Roumanie, O.; Weinachter, C.; Larrieu, I.; Crouzet, M.; Doignon, F., 2001: Functional characterization of the Bag7, Lrg1 and Rgd2 RhoGAP proteins from Saccharomyces cerevisiae. Rho proteins are down-regulated in vivo by specific GTPase activating proteins (RhoGAP). We have functionally studied three Saccharomyces cerevisiae putative RhoGAP. By first identifying Rho partners with a systematic two-hybrid approach and then...

Blair, K. G., 1942: The first-stage larva of Meloe violaceus Marsh. (Co)., Meloidae). Entomologist's Monthly Magazine, 78: 112-116

Ribbons B.W., 1973: Ailsa craig. Glasgow Naturalist: 70

Fernández, Mía.Belén.; Daleo, G.Raúl.; Guevara, Mía.Gabriela., 2013: DEVDase activity is induced in potato leaves during Phytophthora infestans infection. Programmed cell death (PCD) occurs in plants, animals and several branches of unicellular eukaryotes as a part of developmental and/or defense processes. Caspase proteases are universal mediators of animal apoptosis, a type of PCD. In plants, ther...

Ponzone, A.; Carando, R., 1972: Clinical and therapeutic considerations on 16 cases of meconial aspiration syndrome. Minerva Pediatrica 24(14): 579-582

Whitemarsh, R.C.M.; Tepp, W.H.; Bradshaw, M.; Lin, G.; Pier, C.L.; Scherf, J.M.; Johnson, E.A.; Pellett, S., 2013: Characterization of botulinum neurotoxin A subtypes 1 through 5 by investigation of activities in mice, in neuronal cell cultures, and in vitro. Botulinum neurotoxins (BoNTs) are synthesized by Clostridium botulinum and exist as seven immunologically distinct serotypes designated A through G. For most serotypes, several subtypes have now been described based on nominal differences in the a...