Chipavg {BSDA} | R Documentation |
Data for Exercises 6.49 and 7.47
Chipavg
A data frame with 30 observations on the following 3 variables.
wafer1
wafer2
thickness
Kitchens, L. J. (2003) Basic Statistics and Data Analysis. Duxbury
str(Chipavg) attach(Chipavg) EDA(thickness) t.test(thickness,mu=1000) boxplot(wafer1,wafer2,name=c("Wafer 1","Wafer 2")) shapiro.test(wafer1) shapiro.test(wafer2) t.test(wafer1,wafer2,var.equal=TRUE) detach(Chipavg)