The value such that 25% (one quarter) of the data values are less and 75% more. It is one of three quartiles, the others being the median (50% point) and upper quartile (75% point).

The value such that 25% (one quarter) of the data values are less and 75% more. It is one of three quartiles, the others being the median (50% point) and upper quartile (75% point).