R: Colours of Eyes and Hair of People in Caithness

caith {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

    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))

[Package MASS version 7.3-45 Index]