R Dataset / Package datasets / PlantGrowth

Submitted by pmagunia on March 9, 2018 - 1:06 PM
Dataset License
GNU General Public License v2.0
Attachment Size
dataset-70955.csv 374 bytes
Documentation

Results from an Experiment on Plant Growth

Description

Results from an experiment to compare yields (as measured by dried weight of plants) obtained under a control and two different treatment conditions.

Usage

PlantGrowth

Format

A data frame of 30 cases on 2 variables.

[, 1] weight numeric
[, 2] group factor

The levels of group are ‘ctrl’, ‘trt1’, and ‘trt2’.

Source

Dobson, A. J. (1983) An Introduction to Statistical Modelling. London: Chapman and Hall.

Examples

## One factor ANOVA example from Dobson's book, cf. Table 7.4:
require(stats); require(graphics)
boxplot(weight ~ group, data = PlantGrowth, main = "PlantGrowth data",
        ylab = "Dried weight of plants", col = "lightgray",
        notch = TRUE, varwidth = TRUE)
anova(lm(weight ~ group, data = PlantGrowth))
--

Dataset imported from https://www.r-project.org.

Documentation License
GNU General Public License v2.0

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