These data frames have yield averages by blocks (parcels).
A data frame with 324 observations on 9 variables.
code
a numeric vector
island
id
site
a factor with 8 levels.
block
a factor with levels I II III IV
plot
trt
a factor consisting of 12 levels
harvwt
a numeric vector; the average yield
Source
Andrews DF; Herzberg AM, 1985. Data. A Collection of Problems from Many Fields for the Student and Research Worker. Springer-Verlag. (pp. 339-353)
Use the following R code to directly access this dataset in R.