The midrange is the average of the maximum and minimum values of a set of data. This measure of center is not as common as the mode, mean or median.
If a data set consists of 3, 4, 10 and 11, then its minimum is 3, its maximum is 11 and its midrange is 7. This is reached by adding 3 and 11, then dividing by 2, which equals 7.
The mode is the data point that occurs most frequently in a data set. The mean is determined by adding all values of a set and dividing by the number of values in that set. The median of a set is reached by assembling the data points in ascending order and pinpointing the data point directly in the middle.