DeskTray

Statistics Calculator

Descriptive statistics for any list of numbers: central tendency, spread and quartiles, with both sample and population formulas.

Runs in your browser. Nothing is uploaded Free, no sign-up Works on mobile
Data setPaste numbers separated by commas, spaces or new lines. You can paste a column from Excel.

Sorted: 11, 12, 14, 15, 15, 15, 17, 19, 20, 22

Mean
16
Median
15
Std. deviation (sample)
3.496029
Count (n)10
Sum160
Mean16
Median15
Mode15
Minimum11
Maximum22
Range11
First quartile (Q1)14.25
Third quartile (Q3)18.5
Interquartile range4.25
Sample standard deviation (s)3.496029
Population standard deviation (σ)3.316625
Sample variance (s²)12.222222
Population variance (σ²)11
Coefficient of variation21.85%
Geometric mean15.658966
Harmonic mean15.323776

How to use Statistics Calculator

  1. Paste your data, one value per line or separated by commas.
  2. Read the summary statistics.
  3. Copy the results table if you need it elsewhere.

Frequently asked questions

What is the difference between sample and population standard deviation?

Population SD divides by n and is used when you have every value. Sample SD divides by n − 1 and is used when your data is a sample from a larger group.

How are quartiles calculated?

This calculator uses linear interpolation between sorted values, the same method as Excel’s QUARTILE.INC function.

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