The forecast results show the different result values for each forecast and also the probability of obtaining any value. Crystal Ball normalizes these probabilities to calculate another important number: the certainty.
The chance of any forecast value falling between –Infinity and +Infinity is always 100%. However, the chance — or certainty — of that same forecast being at least zero (which you might want to calculate to make sure that you make a profit) might be only 45%. For any range you define, Crystal Ball calculates the resulting certainty. This way, not only do you know that the company has a chance to make a profit, but you can also quantify that chance by saying that the company has a 45% chance of making a profit on a venture (a venture you might, therefore, decide to skip).