Definition

The Average of the data set calculated by dividing the sum of all values in the data set by the total number of values in the data set.

Examples

Consider the dataset shown. To get the mean of the values, calculate:

Sum = 2 + 4 + 7 + 3 + 4 + 6 + 9 + 5 + 2 + 4 = 46
n = number of data points = 10
Mean = 46 / 10 = 4.6

External Links

NIST Statistics Handbook: Process Characterization - http://www.itl.nist.gov/div898/handbook/toolaids/pff/ppc.pdf