Used to graphically represent the data set when the data set contains a small number of values, involving five values: the minimum value, the lower hinge, the median, the upper hinge, and the maximum value
The median of all values less than or equal to the median when the data set has an odd number of values, or as the median of all values less than the median when the data set has an even number of values
The median of all values greater than or equal to the median when the data set has an odd number of values, or as the median of all values greater than the median when the data set has an even number of values