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Ecdat (version 0.2-9)

Airq: Air Quality for Californian Metropolitan Areas

Description

a cross-section from 1972

number of observations : 30

observation : regional

country : United States

Usage

data(Airq)

Arguments

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, https://feb.kuleuven.be/GME/, chapter 4.

See Also

Index.Source, Index.Economics, Index.Econometrics, Index.Observations