BSDA (version 1.2.1)

Simpson: Grade point averages of men and women participating in various sports-an illustration of Simpson's paradox

Description

Data for Example 1.18

Usage

Simpson

Format

A data frame/tibble with 100 observations on three variables

gpa

grade point average

sport

sport played (basketball, soccer, or track)

gender

athlete sex (male, female)

References

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

Examples

boxplot(gpa ~ gender, data = Simpson, col = "violet")
boxplot(gpa ~ sport, data = Simpson, col = "lightgreen")
if (FALSE) {
library(ggplot2)
ggplot2::ggplot(data = Simpson, aes(x = gender, y = gpa, fill = gender)) +
           geom_boxplot() + 
           facet_grid(.~sport) + 
           theme_bw()
}