goulden.barley.uniformity.Rd
Uniformity trial of barley
A data frame with 400 observations on the following 3 variables.
row
row
col
column
yield
yield, grams per plot
Yield in grams for 400 square-yard barley plots.
Field width: 20 plots x 3 feet = 60 feet
Field length: 20 plots x 3 feet = 60 feet
C. H. Goulden, (1939). Methods of statistical analysis, 1st ed. Page 18. https://archive.org/stream/methodsofstatist031744mbp
Erwin LeClerg, Warren Leonard, Andrew Clark (1962). Field Plot Technique, 2nd ed. Page 27.
Alternatively, page 39 in 1939 edition of "Field Plot Technique". https://archive.org/stream/fieldplottechniq00leon
# \dontrun{ library(agridat) data(goulden.barley.uniformity) dat <- goulden.barley.uniformity libs(desplot) desplot(dat, yield ~ col*row, aspect=20/20, # true aspect main="goulden.barley.uniformity")# Left skewed distribution. See LeClerg, Leonard, Clark hist(dat$yield, main="goulden.barley.uniformity", breaks=c(21,40,59,78,97,116,135,154,173,192,211,230,249)+.5)# }