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Mean, median, mode and standard deviation

Summary statistics for a list of numbers, including quartiles and outliers.

Showing a worked example. Change the values and the result updates, and the answer lives in the URL.

Central tendency

Count6
Sum108
Mean (average)18
Median15.5
ModeNo mode, every value appears once
Midrange23
Geometric mean13.96549685
Harmonic mean10.49952448

Spread

Minimum4
Maximum42
Range38
Population variance σ²151.66666667
Population standard deviation σ12.31530213
Sample variance s²182
Sample standard deviation s13.49073756
First quartile Q19.75
Third quartile Q321.25
Interquartile range11.5
Coefficient of variation68.4183%

The dataset

14
28
315
416
523
642
Values as entered4, 8, 15, 16, 23, 42
Sorted ascending4, 8, 15, 16, 23, 42
Unique values6
Outliers (1.5 × IQR rule)42

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Mean, median, mode and standard deviation | Nerdulator