Hi all, I have a scenario with three variables, X,Y,Z and Result This is what I know about them: X could go be from 1 – 100 say meters Y could be 0 – 31 say ranking Z could be 1- 100 say meters Result is in meters (1-100) For values of X between say 1-20 meters, and 80-100 meters it impacts the result very much i.e low values of Result i.e. like a bell shaped curve. If Y increases then the Result increases for the most part of course there could be some exceptions. IF Z increases then the Result increases again with an exception that if Z becomes like 50 meters then the probability of achieving that high Result (meters) is very low. How do I put together an equation that consists of X, Y, Z to achieve the Result. Should I assume a correlation coefficient and then try to fit an equation. I have no clue about this. Any help is greatly appreciated. Thanks.