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Profile Analysis of Variance as a Tool for Analyzing Correlated Responses in Experimental Ecology
Author(s) -
Simms E. L.,
Burdick D. S.
Publication year - 1988
Publication title -
biometrical journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.108
H-Index - 63
eISSN - 1521-4036
pISSN - 0323-3847
DOI - 10.1002/bimj.4710300216
Subject(s) - variance (accounting) , statistics , analysis of variance , ecology , statistical analysis , simple (philosophy) , mathematics , one way analysis of variance , econometrics , computer science , biology , accounting , philosophy , epistemology , business
In ecological studies experiments are often designed in which the variables to be compared are not statistically independent. Examples include repeated measures of the same response by the same individual at different times, measurement of several traits on the same individual, and measurements taken from two or more types of organisms present together in the same experimental unit (e.g.) plot, cage, pond, etc.). This type of design violates several assumptions of the standard analysis of variance. These assumptions are examined and profile analysis, a modification of the standard analysis of variance which does not depend upon these assumptions, is presented. Simple instructions for performing profile analysis of variance using two common statistical packages for mainframe computers are provided in an appendix.