We simulate 75,000 randomly generated schedules and determine how a given team performs against each schedule. That data is then aggregated together to produce the above results.

The bars represent the number of times an outcome (in this case a winning percentage) occurred. The purple bar represents where the deterministic schedule (Yahoo) occurred. If that purple bar appears toward the middle of the schedule, you can consider that the determistic outcome more or less matches what you should expect. If it appears towards the left side of the graph, that's an unlucky schedule you've got there. If it appears towards the right side, congratulations! Your team might be good, but lady luck has helped you in the standings so don't get too cocky.

Another way to look at that data is through P Value certainties. The P Value is represented by the curved S-line that is overlaid on the bars. This shows a given certainty that an outcome will be at most a given value. What does this mean?

A P(50) winning percentage of .600 means that in 50% of the simulations, the winning percentage was at most .600. P(0) represents the worst case scenario, P(100) represents the best case.