AggregationFunction
=============================

The ``AggregationFunction`` class is a collection of enums that represent the aggregation functions that can be used in some Callables that perform data aggregation, such as :doc:`Aggregate </Callables/Implementations/Transformers/Aggregate>` and :doc:`PivotTable </Callables/Implementations/Transformers/PivotTable>`.

Definition
----------

.. py:class:: AggregationFunction

    Below lists the names of available aggregation functions.

    .. py:attribute:: sum

        Sum of data.

    .. py:attribute:: mean

        Mean of data.

    .. py:attribute:: median

        Median of data.

    .. py:attribute:: min

        Minimum value.

    .. py:attribute:: max

        Maximum value.

    .. py:attribute:: count

        Number of items.

        .. note::
            
            Duplicate items **are** counted more than once.

    .. py:attribute:: std

        Standard deviation of data.

    .. py:attribute:: var

        Variance of data.