lehmann {npordtests}

Lehmann's data

Description

This synthetic data is reported by Lehmann (1975). The data consists of 3 groups with 28, 23 and 21 observations respectively.

Usage

lehmann

Format

A data frame with 72 observations on the following 2 variables.

Group

Number of samples

Values

Value

Source

Lehmann, E. (1975). Nonparametrics: Statistical Methods based on Ranks, Holden-Day, San Francisco, 1st edition, p.12.

Examples

library(npordtests)

data(lehmann)
levels(lehmann$Group) <- c("Undergraduates", "Trainees", "Staff")
boxplot(Values~Group,data=lehmann,xlab="Groups")