Coffee {BSDA}R Documentation

Productivity of workers with and without a coffee break

Description

Data for Exercise 7.55

Usage

Coffee

Format

A data frame with 9 observations on the following 4 variables.

Without
a numeric vector
With
a numeric vector
differ
a numeric vector
sgnrnks
a numeric vector

Source

Kitchens, L. J. (2003) Basic Statistics and Data Analysis. Duxbury

Examples

str(Coffee)
attach(Coffee)
qqnorm(differ)
qqline(differ)
shapiro.test(differ)
t.test(With,Without,paired=TRUE,alternative="greater")
wilcox.test(With,Without,paired=TRUE,alternative="greater")
detach(Coffee)

[Package BSDA version 0.1 Index]