frets {boot} | R Documentation |
The frets
data frame has 25 rows and 4 columns.
The data consist of measurements of the length and breadth of the heads of pairs of adult brothers in 25 randomly sampled families. All measurements are expressed in millimetres.
frets
This data frame contains the following columns:
l1
b1
l2
b2
The data were obtained from
Frets, G.P. (1921) Heredity of head form in man. Genetica, 3, 193.
Davison, A.C. and Hinkley, D.V. (1997) Bootstrap Methods and Their Application. Cambridge University Press.
Whittaker, J. (1990) Graphical Models in Applied Multivariate Statistics. John Wiley.