Airq {Ecdat} | R Documentation |
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, http://www.econ.kuleuven.ac.be/GME.
See Also
Index.Books
, Index.Economics
, Index.Econometrics
, Index.Observations
[Package
Ecdat version 0.1-3
Index]