The arithmetic mean The arithmetic mean is the sum of all values divided by their count. So the median is 14. For example the mode of the set of values 1 2 2 3 4 6 is 2.
13 13 13 13 14 14 16 18 21.
Add up all of the numbers and divide by the number of numbers in the data set. This free calculator determines the mean median mode and range of a given data set. Summing the differences between the mean and each element of a set results in zero so the mean is an unbiased statistic. Comment on efwawas post Mean Average Median Middle and if you have 2.