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 : https://amstat.tandfonline.com/loi/ubes20.
Catsup
,
Index.Source
,
Index.Economics
,
Index.Econometrics
,
Index.Observations