StratificationType
------------------

Describe all stratifications here. Note that each stratified group will be sampled using the same sampling plan. For example stratifying a state by ZIP Code areas in each of 5 mean income quintiles and then doing a random sample of the households in set of ZIP Codes. Allows for oversampling of identified subpopulations. Example: urban/rural, gender, state, marital status. Might be defined at the SamplngScheme level.

Properties
~~~~~~~~~~

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

   "StratificationRationale",":doc:`/composite-types/StratificationRationaleType/index`","0..1","Describe the purpose for stratifying your sample frame prior to sampling."
   "AllocationMethod",":doc:`/composite-types/StructuredStringType/index`","0..1","Method to determine how the sample should be allocated/distributed (Source: US Census Metadata Standard document)"
   "StrataNumber","nonNegativeInteger","1..1","Assign a number to the strata being described"


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

* :doc:`/item-types/SampleStep/index`
* :doc:`/item-types/SamplingStage/index`

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