**Peter**Hey,

just came accross this... I personally really like the following calculator for poisson distributions: https://www.plotgraphs.com/mathtools/poisson-distribution/ It is straight forward. If you later want to translate the obtained probability in significance level you can also check out the significance calculator there..

Regards

- JotForm Support
**Welvin**Hi Peter,

We'll try to check and create this kind of form. We'll let you know here.

Thanks for waiting!