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| Quartet   | R Documentation   |
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Four Regression Datasets
------------------------

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

The ``Quartet`` data frame has 11 rows and 5 columns. These are
contrived data.

Usage
~~~~~

::

    Quartet

Format
~~~~~~

This data frame contains the following columns:

x
    X-values for datasets 1–3.

y1
    Y-values for dataset 1.

y2
    Y-values for dataset 2.

y3
    Y-values for dataset 3.

x4
    X-values for dataset 4.

y4
    Y-values for dataset 4.

Source
~~~~~~

Anscombe, F. J. (1973) Graphs in statistical analysis. *American
Statistician* **27**, 17–21.
