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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-p)/p^2`
