Just a quick blog on a question asked in dynamics community here : https://community.dynamics.com/crm/f/117/t/293930

Requirement was to show Lost & Won opportunities grouped by a manager in a Bar Chart:

Try below Steps.

1. Create a view as below :
2. Create a chart on that view in opportunity as below:
3.  Save and close & make sure to publish the customisation. Below is the end product.
   

Hope this helps!

Cheers!