Formulas in Statgraphics, should be validated?


If I design some formulas in Stathgraphics for process validation, is it necessary to validate this formulas within Statgraphics?



Without additional understanding of how the formulas are used, I would tend to say ‘yes.’

How do you know you implemented the formulas correctly? How do you know the range of inputs is properly handled? How do you know that invalid inputs are handled properly (and you don’t get bogus output)? How do you know (for the range of inputs) the outputs are correct?

Of course, if none of that matters, then maybe validation isn’t necessary.