Math Playground
Data

Quartiles

Split sorted data into four equal groups — Q1, Q2 (median), Q3.

Sort the data and split into four equal parts. The cuts are the quartiles.

The three cuts

  • Q1 — 25th percentile.
  • Q2 — 50th percentile (median).
  • Q3 — 75th percentile.
  • IQR = Q3 − Q1.