Function plant_growth

Source

pub fn plant_growth() -> Result<DataFrame, PolarsError>

Expand description

§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] groupfactor

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))

plant_growth