fisher.latin {agridat} | R Documentation

## 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.

### Source

Mercer, WB and Hall, AD, 1911. The experimental error of field trials The Journal of Agricultural Science, 4, 107-132. Table 1. http::/doi.org/10.1017/S002185960000160X

R. A. Fisher. Statistical Methods for Research Workers.

### Examples

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

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

[Package agridat version 1.16 Index]