Dissolving time versus level of impurities in aspirin tablets

Source: R/BSDA-package.R

Data for Exercise 10.51

Asprin

Format

A data frame/tibble with 15 observations on two variables

time

time (in seconds) for aspirin to dissolve

impurity

impurity of an ingredient with levels 1%, 5%, and 10%

References

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

Examples


boxplot(time ~ impurity, data = Asprin, 
        col = c("red", "blue", "green"))