grass: Data for Friedman test
Description
Twelve homeowners are selected randomly to participate in an experiment with
a plant nursery. Each homeowner is asked to select four fairly identical
areas in his yard and to plant four different types of grasses, one in each area.source
Book: Practical Nonparametrics Statistics, pag 372.Details
Each of the 12 blocks consists of four fairly identical plots of land,
each receiving care of approximately the same degree of skill because the
four plots are presumably cared for by the same homeowern.References
Practical Nonparametrics Statistics. W.J. Conover, 1999