R Dataset / Package Ecdat / Airq

On this R-data statistics page, you will find information about the Airq data set which pertains to Air Quality for Californian Metropolitan Areas . The Airq data set is found in the Ecdat R package. You can load the Airq data set in R by issuing the following command at the console data("Airq"). This will load the data into a variable called Airq. If R says the Airq data set is not found, you can try installing the package by issuing this command install.packages("Ecdat") and then attempt to reload the data with the library() command. 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 Airq R data set. The size of this file is about 1,079 bytes.

Air Quality for Californian Metropolitan Areas

Description

a cross-section from 1972

number of observations : 30

observation : regional

country : United States

Usage

data(Airq)

Format

A dataframe containing :

airq: indicator of air quality (the lower the better)
vala: value added of companies (in thousands of dollars)
rain: amount of rain (in inches)
coas: is it a coastal area ?
dens: population density (per square mile)
medi: average income per head (in US dollars)

References

Verbeek, Marno (2004) A Guide to Modern Econometrics, John Wiley and Sons, chapter 4.

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