=========
Sign Test
=========
:doc:`/WorkProcessClassifiers/GlobalAlgorithm/index` - :doc:`/WorkProcessClassifiers/OneDimensionalAlgorithm/index`

*Sign Test* algorithm is a statistical method that is useful for detecting underlying trends in data.

.. rubric:: Input Parameters

+--------------------+--------------------------------------------+----------------------------------------+------------------------------------------------+---------+
| Parameter          | Type                                       | Constraint                             | Description                                    | Remarks |
+====================+============================================+========================================+================================================+=========+
| :math:`Y`          | :math:`Y \in \mathbb R^N`                  | :math:`N \in \mathbb{N}`               | Input data vector of length :math:`N`          |         |
+--------------------+--------------------------------------------+----------------------------------------+------------------------------------------------+---------+

.. rubric:: Output Parameters

+--------------------+----------------------------------------+------------+------------------------------------------+---------+
| Parameter          | Type                                   | Constraint | Description                              | Remarks |
+====================+========================================+============+==========================================+=========+
| :math:`p`          | :math:`p \in \mathbb R`                |            | The :math:`p`          value of the test |         |
+--------------------+----------------------------------------+------------+------------------------------------------+---------+
| :math:`h`          | Logical data type: true or false       |            |                                          |         |
+--------------------+----------------------------------------+------------+------------------------------------------+---------+

.. rubric:: Tool Support

* :doc:`/Tools/MatlabTool/index`

  For details refer to the online documentation of the function `'signtest' <http://www.mathworks.de/help/toolbox/stats/signtest.html>`__.

.. rubric:: Single Steps using the Algorithm

* :doc:`/DataPreprocessing/MathematicalComputation/HandlingDataStationarity/TestingDataStationarityWithSignTest/index`

.. rubric:: References

- M.\  Hollander, D.A. Wolfe, Nonparametric Statistical Methods, Hoboken, NJ: John Wiley & Sons, Inc., 1999.