Welcome to WikiEducator! I don't know the answer to your question, but I am dedicated to creating learning content to help people learn math more easily. I work on the Math Glossary project, begun by Gladys Gahona. I noticed your page on probability distribution, so I'm thinking that you are interested in math and statistics as well. Please check out the Math Glossary main page (Gladys has created a wonderful explanation of the project and many helpful guidelines for contributors. Please consider joining the project. There is so much to do!!
Your WikiNeighbor, Alison