Carbon monoxide level measured at three industrial sites

Data for Exercise 10.28 and 10.29

Carbon

Format

A data frame/tibble with 24 observations on two variables

CO

carbon monoxide measured (in parts per million)

site

a factor with levels SiteA, SiteB, and SiteC

References

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

Examples

boxplot(CO ~ site, data = Carbon, col = "lightgreen")

kruskal.test(CO ~ site, data = Carbon)
#> 
#> 	Kruskal-Wallis rank sum test
#> 
#> data:  CO by site
#> Kruskal-Wallis chi-squared = 4.9083, df = 2, p-value = 0.08594
#>