Mental impariment and parents SES
A 6 x 4 contingency table representing the cross-classification of
mental health status (mental) of 1660 young New York residents by
their parents' socioeconomic status (ses).
data(Mental)
A data frame frequency table with 24 observations on the following 3 variables.
sesan ordered factor with levels 1 < 2 < 3 < 4 < 5 < 6
mentalan ordered factor with levels Well < Mild < Moderate < Impaired
Freqcell frequency: a numeric vector
Both ses and mental can be treated as ordered factors or
integer scores. For ses, 1="High" and 6="Low".
Haberman, S. J. The Analysis of Qualitative Data: New Developments, Academic Press, 1979, Vol. II, p. 375.
Srole, L.; Langner, T. S.; Michael, S. T.; Kirkpatrick, P.; Opler, M. K. & Rennie, T. A. C. Mental Health in the Metropolis: The Midtown Manhattan Study, NYU Press, 1978, p. 289
Friendly, M. Visualizing Categorical Data, Cary, NC: SAS Institute, 2000, Appendix B.7.
data(Mental) str(Mental) (Mental.tab <- xtabs(Freq ~ ses+mental, data=Mental)) # mosaic and sieve plots mosaic(Mental.tab, gp=shading_Friendly) sieve(Mental.tab, gp=shading_Friendly) library(ca) plot(ca(Mental.tab), main="Mental impairment & SES") title(xlab="Dim 1", ylab="Dim 2")
Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.