Calculate the five-number summary of a data set: minimum, Q1, median, Q3, and maximum.
Calculate the five-number summary of a data set: minimum, Q1, median, Q3, and maximum.
These five values give a compact snapshot of a data set's shape and spread at a glance — the minimum and maximum mark the extremes, the median marks the center, and Q1/Q3 mark the boundaries of the middle 50%. This is also exactly the set of values used to draw a box plot.