agridat (version 1.23)

fisher.latin: Latin square experiment on mangolds

Description

Latin square experiment on mangolds. Used by R. A. Fisher.

Usage

data("fisher.latin")

Format

A data frame with 25 observations on the following 4 variables.

trt

treatment factor, 5 levels

yield

yield

row

row

col

column

Details

Yields are root weights. Data originally collected by Mercer and Hall as part of a uniformity trial.

This data is the same as the data from columns 1-5, rows 16-20, of the mercer.mangold.uniformity data in this package.

Unsurprisingly, there are no significant treatment differences.

Examples

library(agridat)

data(fisher.latin)
dat <- fisher.latin

# Standard latin-square analysis
m1 <- lm(yield ~ trt + factor(row) + factor(col), data=dat)
anova(m1)