On this R-data statistics page, you will find information about the pair65 data set which pertains to Heated Elastic Bands. The pair65 data set is found in the DAAG R package. You can load the pair65 data set in R by issuing the following command at the console data("pair65"). This will load the data into a variable called pair65. If R says the pair65 data set is not found, you can try installing the package by issuing this command install.packages("DAAG") and then attempt to reload the data. If you need to download R, you can go to the R project website. You can download a CSV (comma separated values) version of the pair65 R data set. The size of this file is about 91 bytes.
Heated Elastic Bands
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.
This data frame contains the following columns:
a numeric vector giving the stretch lengths for the heated bands
a numeric vector giving the stretch lengths for the unheated bands
mean(pair65$heated - pair65$ambient)
sd(pair65$heated - pair65$ambient)
Dataset imported from https://www.r-project.org.