Data from a completely randomized design where four different methods of growing
corn resulted in various yields per acre on various plots of ground where the
four methods were tried. Ordinarily, only one statistical analysis is used,
but here we will use the kuskal-wallis test so that a rough comparison may be made
with the mediasn test.
Usage
data(corn)
Arguments
Format
A data frame with 34 observations on the following 3 variables.
method
a numeric vector
observation
a numeric vector
rx
a numeric vector
Details
The observations are ranked from the smallest, 77, of rank 1 to the largest 101,
of rank N=34. Ties values receive the averarge rank.
References
Practical Nonparametrics Statistics. W.J. Conover. Third Edition, 1999.