USairpollution: Air Pollution in US Cities

Description Usage Format Details Source Examples

Description

Air pollution data of 41 US cities.

Usage

1
data("USairpollution")

Format

A data frame with 41 observations on the following 7 variables.

SO2

SO2 content of air in micrograms per cubic metre.

temp

average annual temperature in Fahrenheit.

manu

number of manufacturing enterprises employing 20 or more workers.

popul

population size (1970 census); in thousands.

wind

average annual wind speed in miles per hour.

precip

average annual precipitation in inches.

predays

average number of days with precipitation per year.

Details

The annual mean concentration of sulphur dioxide, in micrograms per cubic metre, is a measure of the air pollution of the city. The question of interest here is what aspects of climate and human ecology as measured by the other six variables in the data determine pollution?

Source

R. R. Sokal and F. J. Rohlf (1981), Biometry, W. H. Freeman, San Francisco (2nd edition).

Examples

1
  data("USairpollution", package = "HSAUR3")

HSAUR3 documentation built on Aug. 19, 2017, 1:02 a.m.