a cross-section
number of observations : 2798
observation : individuals
country : United States
data(Catsup)A dataframe containing :
individuals identifiers
one of heinz41, heinz32,
heinz28, hunts32
is there a display for brand z ?
is there a newspaper feature advertisement for brand z ?
price of brand z
Journal of Business Economics and Statistics web site : https://amstat.tandfonline.com/loi/ubes20.
Ketchup,
Index.Source,
Index.Economics,
Index.Econometrics,
Index.Observations