Mean, variance, and stddev of 2,4,4,4,5,5,7,9

Compute mean, variance, and standard deviation for the dataset: 2, 4, 4, 4, 5, 5, 7, 9. Free, instant, browser-based.

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Formula

mean = 5.0000, variance = 4.5714, stddev = 2.1381

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Mean, variance, and stddev of 2,4,4,4,5,5,7,9

Compute mean, variance, and standard deviation for the dataset: 2, 4, 4, 4, 5, 5, 7, 9. Free, instant, browser-based.

100% Client-SideYour Data Stays LocalNo Account Required

Numbers (comma-, space-, or newline-separated)

Parsed 10 numbers.

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Count (n)10

Sum55

Mean (average)5.5

Variance (sample, n−1)9.16666666667

Std dev (sample, n−1)3.0276503541

Min1

Max10

Range9

Sample variance uses n−1 (Bessel's correction). Click to copy.

Try an example:

mean = 5.0000, variance = 4.5714, stddev = 2.1381