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Unformatted text preview: pendent variables
were the three yield components and the independent variables
were pathogens, years, and cultivars, including interaction terms
among these three factors. Similarly, Evans et al. (3) used
MANOVA to examine differences in host penetration and colonization by Alternaria linicola in three genotypes (susceptible,
moderately resistant, and resistant) of Linum usitatissimum.
Dependent variables were associated with host penetration and
colonization, and the three genotypes were independent variables.
There are scenarios in which response variables are temporally
and spatially dependent. As an example, consider an experiment
designed to assess the effect of several fungicides on the severity
of a disease in a set of crop cultivars, and that disease severity
(DS) was recorded at four time points (t1, t2, t3, and t4) yielding
disease severity values of DS1, DS2, DS3, and DS4, respectively.
Typically, these DS values at the four time points are correlated, and thus are not independent. The exi...
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This document was uploaded on 11/20/2013.
- Summer '11
- The American, Multivariate statistics, MANOVA