Article
Rank regression for analyzing ordinal qualitative data for treatment comparison.
Phytopathology - 1 Nov 2012
Fu L Y, Wang Y-G, Liu C J
Abstract excerpt
ABSTRACT Ordinal qualitative data are often collected for phenotypical measurements in plant pathology and other biological sciences. Statistical methods, such as t tests or analysis of variance, are usually used to analyze ordinal data when comparing two groups or multiple groups. However, the underlying assumptions such as normality and homogeneous variances are often violated for qualitative data. To this...
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