The MEAN is the arithmetic average value. You get it by dividing the sum by the number of number in the series.
The MEDIAN (not mediem)is the number that divides the largest 50% from the lowest 50% of the numbers in the series.
The MODE is the number that occurs most often in the series.
In the series
The mean is 4.4, the median is 5 and the mode is 6.
that is wrong the mean is 56