SPLGrass.dat {dae} R Documentation

## Data for an experiment to investigate the effects of grazing patterns on pasture composition

### Description

The response variable is the percentage area covered by the principal grass (Main.Grass). The design for the experiment is a split-unit design. The main units are arranged in 3 Rows x 3 Columns. Each main unit is split into 2 SubRows x 2 SubColumns.

The factor Period, with levels 3, 9 and 18 days, is assigned to the main units using a 3 x 3 Latin square. The two-level factors Spring and Summer are assigned to split-units using a criss-cross design within each main unit. The levels of each of Spring and Summer are two different grazing patterns in its season.

### Usage

data(SPLGrass.dat)

### Format

A data.frame containing 36 observations of 8 variables.

### Source

Example 14.1 from Mead, R. (1990). The Design of Experiments: Statistical Principles for Practical Application. Cambridge, Cambridge University Press.

[Package dae version 3.2-13 Index]