Description

Data on natural gas usage in a house. The weekly gas consumption (in 1000 cubic feet) and the average outside temperature (in degrees Celsius) was recorded for 26 weeks before and 30 weeks after cavity-wall insulation had been installed. The house thermostat was set at 20C throughout.

Usage

Format

A data frame with 44 observations on the following 3 variables.

Insulate

a factor with levels After Before

Temp

Outside temperature

Gas

Weekly consumption in 1000 cubic feet

Source

MASS package as whiteside

Examples