SummaryStatisticType
--------------------

Describes a summary statistic for a variable.

Properties
~~~~~~~~~~

.. csv-table::
   :header: "Name","Type","","Description"
   :widths: 15,10,5,100

   "TypeOfSummaryStatistic",":doc:`/composite-types/CodeValueType/index`","0..1","Type of summary statistic, such as count, mean, mode, median, etc. Supports the use of an external controlled vocabulary. DDI strongly recommends the use of a controlled vocabulary. The DDI Alliance has provided a controlled vocabulary (SummaryStatisticType) to support this element at http://www.ddialliance.org/controlled-vocabularies."
   "Statistic",":doc:`/composite-types/StatisticType/index`","0..1","The value (expressed as a decimal) of the statistics and whether it is weighted and/or includes missing values."
   "StatisticDouble",":doc:`/composite-types/StatisticDoubleType/index`","0..1","The value (expressed as a double) of the statistics and whether it is weighted and/or includes missing values."


Relationships
~~~~~~~~~~~~~
The following types reference this type.

* :doc:`/item-types/VariableStatistics/index`

.. container:: image

   |stub|

.. |stub| image:: ../../images/SummaryStatisticType.svg