+-----------+-------------------+
| Ketchup   | R Documentation   |
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Choice of Brand for Ketchup
---------------------------

Description
~~~~~~~~~~~

a cross-section

*number of observations* : 4956

*observation* : individuals

*country* : United States

Usage
~~~~~

::

    data(Ketchup)

Format
~~~~~~

A dataframe containing :

hid
    individuals identifiers

id
    purchase identifiers

choice
    one of heinz, hunts, delmonte, stb (store brand)

price.z
    price of brand z

Source
~~~~~~

Kim, Byong–Do, Robert C. Blattberg and Peter E. Rossi (1995) “Modeling
the distribution of price sensitivity and implications for optimal
retail pricing”, *Journal of Business Economics and Statistics*,
**13(3)**, 291.

References
~~~~~~~~~~

Journal of Business Economics and Statistics web site :
`http://www.amstat.org/publications/jbes/ <http://www.amstat.org/publications/jbes/>`_.

See Also
~~~~~~~~

``Index.Source``, ``Index.Economics``, ``Index.Econometrics``,
``Index.Observations``
