Quartiles (four equal groups) are what I'm a little familiar with in QA statistics.

Quartiles (four equal groups) are what I'm a little familiar with in QA statistics.

Quintiles, Quantiles, and Quartiles,,,,,,,,,,,, similar, but not the same. It's enough to drive you crazy.
Quintiles, Quantiles, and Quartiles,,,,,,,,,,,, similar, but not the same. It's enough to drive you crazy.