Standard Deviation Calculator for Population or Sample Data Sets ... This calculator will calculate the mean, variance and standard deviation of an entered or pasted-in data set, ..... or any combination thereof), or you can enter a number and its frequency (12x4, 8x6, 9x4). .... Mean = (5 + 4 + 7 + 9 + 6 + 8 + 7 + 5 + 4) ÷ 10.
