a cross-section from 1987
number of observations : 312
observation : individuals
country : Portugal
A dataframe containing :
initial bid, in euro
a factor with levels (nn,ny,yn,yy)
age in 6 classes
a factor with levels (male,female)
income in 8 classes
Nunes, Paulo (2000) Contingent Valuation of the Benefits of natural areas and its warmglow component, PhD thesis 133, FETEW, KULeuven.
Verbeek, Marno (2004) A Guide to Modern Econometrics, John Wiley and Sons, chapter 7.