The variance of a set of numbers is the measure of how spread out they are. A variance of zero indicates that there is no variance which means all of the values are the same. Variance can never be represented with a negative number. The higher the variance the more spread out the values in the data set are.
Variables:
- p = Success Rate
- q = Failure Rate (Calculated as 1-p)
- Equation:
- 1-pp2