Question

in terms of percentiles, define ( q_{l}, q_{m} ), and ( q_{u} ).
( q_{l} ) is the ( square )th percentile of a data set, ( q_{m} ) is the ( square )th percentile, and ( q_{u} ) is the ( square )th percentile.
(type whole numbers.)

Explanation:

Percentiles divide a data set into 100 equal - sized parts. The lower quartile ($Q_{L}$) divides the data set such that 25% of the data lies below it. The median ($Q_{M}$) divides the data set into two equal parts, so 50% of the data lies below it. The upper quartile ($Q_{U}$) divides the data set such that 75% of the data lies below it.

Answer:

$Q_{L}$ is the 25th percentile of a data set, $Q_{M}$ is the 50th percentile, and $Q_{U}$ is the 75th percentile.