Irises: R.A. Fishers famous data on Irises
In BSDA: Basic Statistics and Data Analysis

Irises

R Documentation

R.A. Fishers famous data on Irises

Description

Data for Examples 1.15 and 5.19

Usage

Irises

Format

A data frame/tibble with 150 observations on five variables

sepal_length: sepal length (in cm)
sepal_width: sepal width (in cm)
petal_length: petal length (in cm)
petal_width: petal width (in cm)
species: a factor with levels setosa, versicolor, and virginica

Source

Fisher, R. A. (1936) The use of multiple measurements in taxonomic problems. Annals of Eugenics, 7, Part II, 179-188.

References

Kitchens, L. J. (2003) Basic Statistics and Data Analysis. Pacific Grove, CA: Brooks/Cole, a division of Thomson Learning.

Examples


tapply(Irises$sepal_length, Irises$species, mean)
t.test(Irises$sepal_length[Irises$species == "setosa"], conf.level = 0.99)
hist(Irises$sepal_length[Irises$species == "setosa"], 
     main = "Sepal length for\n Iris Setosa",
     xlab = "Length (in cm)")
boxplot(sepal_length ~ species, data = Irises)

BSDA documentation built on Sept. 19, 2023, 1:08 a.m.