agridat (version 1.23)

heath.cabbage.uniformity: Uniformity trial of cabbage.

Description

Uniformity trial of cabbage.

Usage

data("heath.cabbage.uniformity")

Format

A data frame with 48 observations on the following 3 variables.

yield

pounds per plot

col

column

row

row

Details

Heath says each plot is .011 acres. An acre is 43560 sq ft, so each plot is 479.16 sq feet, which rounds to 480 sq feet. If Heath Figure 3-1 is correctly shaped, each plot is approximately 12 feet x 40 feet = 480 sq ft. Each plot had "some 350" plants. Harvested 1958.

References

None.

Examples

if (FALSE) {
  library(agridat)
  data(heath.cabbage.uniformity)
  dat <- heath.cabbage.uniformity
  
  # Heath Fig 3-1, p. 50
  libs(desplot)
  desplot(dat, yield ~ col*row,
          aspect=(8*12)/(6*40),
          main="heath.cabbage.uniformity")

}