BSDA (version 1.2.1)

Inspect: Percent of vehicles passing inspection by type inspection station

Description

Data for Exercise 8.59

Usage

Inspect

Format

A data frame/tibble with 174 observations on two variables

station

a factor with levels auto inspection, auto repair, car care center, gas station, new car dealer, and tire store

passed

a factor with levels less than 70%, between 70% and 84%, and more than 85%

References

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

Examples

T1 <- xtabs(~ station + passed, data = Inspect)
T1
barplot(T1, beside = TRUE, legend = TRUE)
chisq.test(T1)
rm(T1)

if (FALSE) {
library(ggplot2)
ggplot2::ggplot(data = Inspect, aes(x = passed, fill = station)) + 
           geom_bar(position = "dodge") + 
           theme_bw()
}