Are you trying to use the Analysis ToolPak dialog box?
There is a better version, for free, from Frontline Systems.
Running into a bug? Microsoft knows about the problem.
George Mount’s book: https://amzn.to/3ygyK5z
Dan Fylstra’s XLMiner info: rel=”nofollow”>https://appsource.microsoft.com/en-us/product/office/WA104379190