Heated Elastic Bands

Description

The pair65 data frame has 9 rows and 2 columns. Eighteen elastic bands were divided into nine pairs, with bands of similar stretchiness placed in the same pair. One member of each pair was placed in hot water (60-65 degrees C) for four minutes, while the other was left at ambient temperature. After a wait of about ten minutes, the amounts of stretch, under a 1.35 kg weight, were recorded.

Usage

pair65

Format

This data frame contains the following columns:

heated

a numeric vector giving the stretch lengths for the heated bands

ambient

a numeric vector giving the stretch lengths for the unheated bands

Source

J.H. Maindonald

Examples

mean(pair65$heated - pair65$ambient)
sd(pair65$heated - pair65$ambient)