PIE

Requirements

Schedule Difficulty

Normality Assumptions

Player by Year

Lower Bound: -1.0512312 Upper Bound: -0.1244444

The first plot generally resembles a normal distribution, but the Q-Q plot confirms normality.

Players Averaged

Lower Bound: -1.3191803 Upper Bound: -0.2452851

The first plot shows somewhat normality, the second plot confirms normality a little more, but it isn't as close as the previous two plots. However, we believe that they are close enough to normality to use the confidence intervals.