Percentiles Determination

[as0306]

As an analyst, I want to be able to find the percentiles of a set of data so that I can determine what percentage of data falls below an observation.

[MatthewFletcher]

https://www.dummies.com/education/math/statistics/how-to-calculate-percentiles-in-statistics/

Calculate each of 25%, 50%, and 75% percentiles.