Flury (version 0.1-3)

m.twins: Male Twins

Description

Anthropometric data collected in the 1950's for 49 monozygotic and 40 dizygotic male twins. See also female twins (f.twins) .

Usage

data(m.twins)

Format

A data frame with 89 observations on the 6 variables and a factor indicating whether the twins are mono- or di-zygotic.

Type

a factor with levels monozygotic dizygotic

STA1

Stature of first twin (cm)

HIP1

Hip width of first twin (cm)

CHE1

Chest circumference of first twin (cm)

STA2

Stature of second twin (cm)

HIP2

Hip width of second twin (cm)

CHE2

Chest circumference of second twin (cm)

Source

Data courtesy of the Institute of Anthropology, University of Hamburg

Details

References

Flury, B.D. (1997) A First Course in Multivariate Statistics, New York: Springer

Examples

data(m.twins)
## Not run: 
# pairs(m.twins[,-1],
#   lower.panel = function(x, y){ points(x, y,
#   pch = unclass(m.twins[,1]),
#   col = as.numeric(m.twins[,1]))},
#   main = "Pairwise scatter plots for male twins")## End(Not run)