HairEyeColor
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dataset-85766.csv | 851 bytes |
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Hair and Eye Color of Statistics StudentsDistribution of hair and eye color and sex in 592 statistics students. UsageHairEyeColor FormatA 3-dimensional array resulting from cross-tabulating 592 observations on 3 variables. The variables and their levels are as follows:
DetailsThe Hair x Eye table comes rom a survey of students at
the University of Delaware reported by Snee (1974). The split by
This data set is useful for illustrating various techniques for the analysis of contingency tables, such as the standard chi-squared test or, more generally, log-linear modelling, and graphical methods such as mosaic plots, sieve diagrams or association plots. Sourcehttp://euclid.psych.yorku.ca/ftp/sas/vcd/catdata/haireye.sas Snee (1974) gives the two-way table aggregated over ReferencesSnee, R. D. (1974) Graphical display of two-way contingency tables. The American Statistician, 28, 9–12. Friendly, M. (1992a) Graphical methods for categorical data. SAS User Group International Conference Proceedings, 17, 190–200. http://www.math.yorku.ca/SCS/sugi/sugi17-paper.html Friendly, M. (1992b) Mosaic displays for loglinear models. Proceedings of the Statistical Graphics Section, American Statistical Association, pp. 61–68. http://www.math.yorku.ca/SCS/Papers/asa92.html Friendly, M. (2000) Visualizing Categorical Data. SAS Institute, ISBN 1-58025-660-0. See Also
Examplesrequire(graphics) ## Full mosaic mosaicplot(HairEyeColor) ## Aggregate over sex (as in Snee's original data) x <- apply(HairEyeColor, c(1, 2), sum) x mosaicplot(x, main = "Relation between hair and eye color") |
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