What kind of Chart would you use?

[TarotRedhand]

SMcNeill you do realise your solution strays into Probability Theory, P(E), don't you? P(E) is a maths function for those that don't know (and one of a vanishingly small list of maths things that I actually have some small idea about). P is probability and E is an event. An event is basically any change to the data being passed to the function. However, don't ask for the actual maths because it's been decades since I touched this (I converted a Bayesian Inferencing Engine from one BASIC to Another and that code is long gone) and what I just said is the sum total of all I remember about the subject these days .

TR