Quartiles
Quartiles[data] gives the {Q1, Q2, Q3} quantile estimates of the elements in data.
Quartiles[dist] gives the quartiles of the distribution dist.
Examples
Get quartiles:
Quartiles[{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}]
(* {3, 11/2, 8} *)For a distribution:
Quartiles[NormalDistribution[0, 1]]Please visit the official Wolfram Language Reference for more details.