a cross-section
number of observations : 4956
observation : individuals
country : United States
data(Ketchup)
A dataframe containing :
individuals identifiers
purchase identifiers
one of heinz, hunts, delmonte, stb (store brand)
price of brand z
Journal of Business Economics and Statistics web site : http://amstat.tandfonline.com/loi/ubes20.
Index.Source
, Index.Economics
, Index.Econometrics
, Index.Observations