For distributions, one quarter {quartile} goes from 0th to 25th percentile {first quartile}. One quarter goes from 25th to 50th percentile {second quartile, distribution}. One quarter goes from 50th to 75th percentile {third quartile}.
Mathematical Sciences>Statistics>Statistical Population>Percentile
3-Statistics-Statistical Population-Percentile
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Date Modified: 2022.0224