cornyield {isdals}

Yield of corn after fertilizer treatment

Description

Two varieties of corn were randomly assigned to the 8 plots in a completely randomized design so that each variety was planted on 4 plots. Four amounts of fertilizer (5, 10, 15, and 20 units) were randomly assigned to the 4 plots in which variety A was planted. Likewise, the same four amounts of fertilizer were randomly assigned to the 4 plots in which variety B was planted. Yield in bushels per acre was recorded for each plot at the end of the experiment.

Usage

data(cornyield)

Format

A data frame with 8 observations on the following 3 variables.

yield

a numeric vector

variety

a factor with levels A B

fertilizer

a numeric vector

Examples

data(cornyield)