I'm trying to evaluate employee productivity when there are multiple variable inputs. Example: Employee #1 produced 10 cases that include working on 50 items and performing 2000 exams, within 400 hours of work. Employee #2 produced 5 cases that include working 50 items and performing 4000 exams, within 400 hours of work. Since cases, items and exams all factor into the work produced, is it acceptable to multiply these three metrics together and divide the total by the hours worked to create a productivity index? Is there a way to put more weight onto one of the metrics over the other two? I've searched and find anything more advanced than product/hours. Sorry if this is the wrong forum. I'm new to this. Thanks for any assistance or push in the right direction.