

   VADeaths {base}                              R Documentation

   DDeeaatthh RRaattee DDaattaa

   DDeessccrriippttiioonn::

        Death rates per 100 in Virginia in 1940.

   UUssaaggee::

        data(VADeaths)

   FFoorrmmaatt::

        A matrix with 5 rows and 5 columns.

   DDeettaaiillss::

        The death rates are cross-classified by age group
        (rows) and population group (columns).  The age groups
        are: 50-54, 55-59, 60-64, 65-69, 70-74 and the popula-
        tion groups are Rural/Male, Rural/Female, Urban/Male
        and Urban/Female.

        This provides a rather nice 3-way analysis of variance
        example.

   SSoouurrccee::

        L. Moyneau, S. K. Gilliam, and L. C. Florant (1947).
        Differences in Virginia death rates by color, sex, age,
        and rural or urban residence.  American Sociological
        Review, 12, 525-535.

   RReeffeerreenncceess::

        McNeil, D. R. (1977).  Interactive Data Analysis.
        Wiley.

   EExxaammpplleess::

        data(VADeaths)
        n <- length(dr <- c(VADeaths))
        nam <- names(VADeaths)
        d.VAD <- data.frame(
         Drate = dr,
         age = rep(ordered(rownames(VADeaths)),length=n),
         gender= gl(2,5,n, labels= c("M", "F")),
         site =  gl(2,10,  labels= c("rural", "urban")))
        coplot(Drate ~ as.numeric(age) | gender * site, data = d.VAD,
               panel = panel.smooth, xlab = "VADeaths data - Given: gender")
        summary(aov.VAD <- aov(Drate ~ .^2, data = d.VAD))
        opar <- par(mfrow = c(2,2), oma = c(0, 0, 1.1, 0))
        plot(aov.VAD)
        par(opar)

