Decision variables are values you can control, such as such as how much to charge for a product or how many wells to drill. The Decision Table tool runs multiple simulations to test different values for one or two decision variables. Inputs are the decision variables to test. The output is a table of results you can analyze further using forecast, trend, or overlay charts.
If you want to optimize decision variable values to reach a specific objective and you have OptQuest, you can use it to find solutions. For more information, see Optimizing Decision Variable Values with OptQuest.