Histogram
----------------

.. admonition:: Check the version

   *Force cache refresh of this page with Ctrl+F5 to have the most update version of the tutorial*

.. raw:: html

       <iframe src="https://docs.google.com/document/d/e/2PACX-1vQgsGco78kFrpF4iMhnkKQbdGu7UlSdre0BeRRHOtf2FQVQdNCaCpiPI4wkqER0cQ/pub?embedded=true" 
       frameborder=0 
       width="900" 
       height="3200" 
       allowfullscreen="true"  
       mozallowfullscreen="true" 
       webkitallowfullscreen="true"></iframe>