Michael friendly phd brings a tremendous amount of experience to the conceptualization research and writing of this invaluable text with expertise in statistics graphics and macro writing michael has taught graduate level courses in multivariate data analysis and computer methods in psychology using sas software for over 25 years. Visual and conceptual models for categorical data a number of graphical methods for categorical data depict cell frequencies by area or observation density this paper describes and extends a physical dynamic model for categorical data suggested by john sall which provides a conceptual model for this visual representation of categorical data. A more general treatment of graphical methods for categorical data is contained in the book discrete data analysis with r visualizing and modeling techniques for categorical and count data . Visualizing categorical data data stories and pictures michael friendly york university friendlyyorkuca abstract categorical data frequency data and discrete data are most of. Visualizing categorical data by michael friendly isbn 1580256600 compare new and used books prices among 130 online bookstores find the lowest price
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