I want to thank you for posing this problem. It is very rare that I get to used my statistics education in my current role . With that said, Look at the attached workbook. I believe it solves exactly your problem. Set 1 is the set of values you gave and Set 2 is a value I made up.
EDIT: I find this instance to be a fascinating use of Tableau and will create a blog post about it. My blog is referenced in my signature. Let me know if there's any way I can credit you.
Book2.twbx.zip 11.4 KB
Thank you so much.