Work out midrange instantly with clear inputs, formula shown and shareable results.
The midrange is the average of the smallest and largest values. It is the simplest measure of centre but is extremely sensitive to outliers, since it uses only the two extreme observations.
Midrange
midrange = (minimum + maximum) / 2
The extremes are 4 and 42, so the midrange is 23 — well above the median of 15.
It ignores every value in between, so a single extreme observation shifts it completely.