+-----------+-------------------+
| bigcity   | R Documentation   |
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Population of U.S. Cities
-------------------------

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

The ``bigcity`` data frame has 49 rows and 2 columns.

The ``city`` data frame has 10 rows and 2 columns.

The measurements are the population (in 1000's) of 49 U.S. cities in
1920 and 1930. The 49 cities are a random sample taken from the 196
largest cities in 1920. The ``city`` data frame consists of the first 10
observations in ``bigcity``.

Usage
~~~~~

::

    bigcity

Format
~~~~~~

This data frame contains the following columns:

``u``
    The 1920 population.

``x``
    The 1930 population.

Source
~~~~~~

The data were obtained from

Cochran, W.G. (1977) *Sampling Techniques*. Third edition. John Wiley

References
~~~~~~~~~~

Davison, A.C. and Hinkley, D.V. (1997) *Bootstrap Methods and Their
Application*. Cambridge University Press.
