| RootStock {heplots} | R Documentation |
In a classic experiment carried out from 1918 to 1934, growth of apple trees of six different rootstocks were compared on four measures of size.
data(RootStock)
A data frame with 48 observations on the following 5 variables.
rootstock1 2 3 4 5 6girth4ext4girth15weight15This is a balanced, one-way MANOVA design, with n=8 trees for each rootstock.
Andrews, D. and Herzberg, A. (1985). Data: A Collection of Problems from Many Fields for the Student and Research Worker Springer-Verlag, pp. 357–360.
Rencher, A. C. (1995). Methods of Multivariate Analysis. New York: Wiley, Table 6.2
data(RootStock) ## maybe str(RootStock) ; plot(RootStock) ... root.mod <- lm(cbind(girth4, ext4, girth15, weight15) ~ rootstock, data=RootStock) Anova(root.mod) pairs(root.mod)