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Title: Reminder about potentially serious problems with a type of blocked ANOVA analysis

Source: Research Paper, FPL-RP-683. Madison, WI: USDA, Forest Service, Forest Products Laboratory. 117 p.

Author(s)Verrill, Steve; Kretschmann, David E.

Publication Year: 2017  View PDF »

Category: Research Papers
Associated Research Project(s):   FPL-4714-1B  FPL-4851-2B

Abstract: A type of blocked experiment has the potential of being poorly designed and/or analyzed. Verrill (1993, 1999) and Verrill et al. (2004) referred to such an experiment as a “predictor sort” experiment. David and Gunnink (1997) described the procedure as “artificial pairing.” In textbooks it is sometimes referred to as a “matched pair” or a “matched subjects” design. The associated design process is also sometimes described as “forming blocks via a comcomitant variable.” In a wood research context, Warren and Madsen (1977) described the allocation procedure as follows:

Keywords: Predictor sort sampling; artificial pairing; matched pairs; matched subjects; concomitant variable; blocked ANOVA; analysis of covariance; maximum likelihood estimation

Publication Review Process: Informally Refereed (Peer-Reviewed)

File size: 1,024 kb(s)

Date posted: 09/05/2017

This publication is also viewable on Treesearch:  view
RITS Product ID: 85975
Current FPL Scientists associated with this product (listed alphabetically)
Kretschmann, David E.
Research General Engineer
Verrill, Steve P.
Mathematical Statistician
 

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