Signal loss from three types of coxial cable

Data for Exercise 10.24 and 10.25

Coaxial

Format

A data frame/tibble with 45 observations on two variables

signal

signal loss per 1000 feet

cable

factor with three levels of coaxial cable typeA, typeB, and typeC

References

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

Examples

boxplot(signal ~ cable, data = Coaxial, col = c("red", "green", "yellow"))

kruskal.test(signal ~ cable, data = Coaxial)
#> 
#> 	Kruskal-Wallis rank sum test
#> 
#> data:  signal by cable
#> Kruskal-Wallis chi-squared = 3.138, df = 2, p-value = 0.2083
#>