caith                  package:MASS                  R Documentation

Colours of Eyes and Hair of People in Caithness

Description:

     Data on the cross-classification of people in Caithness, Scotland,
     by eye and hair colour. The region of the UK is particularly
     interesting as there is a mixture of people of Nordic, Celtic and
     Anglo-Saxon origin.

Usage:

     data(caith)

Format:

     A 4 by 5 table with rows the eye colours (blue, light, medium,
     dark) and columns the hair colours (fair, red, medium, dark,
     black).

Source:

     Fisher, R.A. (1940) The precision of discriminant functions.
     _Annals of Eugenics (London)_ *10*, 422-429.

References:

     Venables, W. N. and Ripley, B. D. (2002) _Modern Applied
     Statistics with S._ Fourth edition.  Springer.

Examples:

     corresp(caith)
     dimnames(caith)[[2]] <- c("F", "R", "M", "D", "B")
     par(mfcol=c(1,3))
     plot(corresp(caith, nf=2)); title("symmetric")
     plot(corresp(caith, nf=2), type="rows"); title("rows")
     plot(corresp(caith, nf=2), type="col"); title("columns")
     par(mfrow=c(1,1))

