.. DO NOT EDIT.
.. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY.
.. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE:
.. "auto_data_analysis/statistical_tests/plot_chi2_fitting_test.py"
.. LINE NUMBERS ARE GIVEN BELOW.

.. only:: html

    .. note::
        :class: sphx-glr-download-link-note

        :ref:`Go to the end <sphx_glr_download_auto_data_analysis_statistical_tests_plot_chi2_fitting_test.py>`
        to download the full example code

.. rst-class:: sphx-glr-example-title

.. _sphx_glr_auto_data_analysis_statistical_tests_plot_chi2_fitting_test.py:


Test a discrete distribution
============================

.. GENERATED FROM PYTHON SOURCE LINES 7-8

In this example we are going to perform a Chi2 goodness-of-fit test for an 1-d discrete distribution.

.. GENERATED FROM PYTHON SOURCE LINES 10-14

.. code-block:: Python

    import openturns as ot

    ot.Log.Show(ot.Log.NONE)








.. GENERATED FROM PYTHON SOURCE LINES 15-16

Create data

.. GENERATED FROM PYTHON SOURCE LINES 16-19

.. code-block:: Python

    distribution = ot.Poisson()
    sample = distribution.getSample(30)








.. GENERATED FROM PYTHON SOURCE LINES 20-21

Fit a Poisson distribution

.. GENERATED FROM PYTHON SOURCE LINES 21-23

.. code-block:: Python

    distribution = ot.PoissonFactory().build(sample)








.. GENERATED FROM PYTHON SOURCE LINES 24-25

Test the fitted distribution

.. GENERATED FROM PYTHON SOURCE LINES 25-27

.. code-block:: Python

    result = ot.FittingTest.ChiSquared(sample, distribution, 0.01)
    print("Conclusion=", result.getBinaryQualityMeasure(), "P-value=", result.getPValue())




.. rst-class:: sphx-glr-script-out

 .. code-block:: none

    Conclusion= True P-value= 0.3560857869884469





.. _sphx_glr_download_auto_data_analysis_statistical_tests_plot_chi2_fitting_test.py:

.. only:: html

  .. container:: sphx-glr-footer sphx-glr-footer-example

    .. container:: sphx-glr-download sphx-glr-download-jupyter

      :download:`Download Jupyter notebook: plot_chi2_fitting_test.ipynb <plot_chi2_fitting_test.ipynb>`

    .. container:: sphx-glr-download sphx-glr-download-python

      :download:`Download Python source code: plot_chi2_fitting_test.py <plot_chi2_fitting_test.py>`