Averages by block of yields for the Antigua Corn data

Description

These data frames have yield averages by blocks (parcels). The ant111b data set is a subset of this.

Usage

antigua

Format

A data frame with 324 observations on 7 variables.

id

a numeric vector

site

a factor with 8 levels.

block

a factor with levels I II III IV

plot

a numeric vector

trt

a factor consisting of 12 levels

ears

a numeric vector; note that -9999 is used as a missing value code.

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)