airpollution: Air pollution data.

In nclSLR: The nclSLR package.

Description

A data comprising of observations from 80 US cities for the year 1960 on 11 variables. These include a number of measures of air pollution, specifically concentrations of sulphate and suspended particulate, as well as a number of demographic variables.

Usage

data(airpollution)

Value

A data frame with 80 rows and 11 variables. The data frame contains the following columns:

SMIN

Smallest biweekly sulphate reading in micrograms per cubic metre (x 10).

SMEAN

Arithmetic mean of biweekly sulphate reading in micrograms per cubic metre (x 10).

SMAX

Largest biweekly sulphate reading in micrograms per cubic metre (x 10).

PMIN

Smallest biweekly suspended particulate reading in micrograms per cubic metre (x 10).

PMEAN

Arithmetic mean of biweekly suspended particulate reading in micrograms per cubic metre (x 10).

PMAX

Largest biweekly suspended particulate reading in micrograms per cubic metre (x 10).

PM2

Population density per square mile (x 0.1).

PERWH

Percent of population who are white.

NONPOOR

Percent of families with income above the poverty level.

GE65

Percent of population who are at least 65 (x 10).

LPOP

Logarithm (base 10) of population (x 10).

Source

The complete data set is described in Gibbons et al. (1987).

References

D.I. Gibbons and G.C. McDonald and R.F. Gunst (1987), The complementary use of regression diagnostics and robust estimators. Naval Research Logistics, 34, 109–131.

Examples

data(airpollution)
head(airpollution)

nclSLR documentation built on May 2, 2019, 5:17 p.m.