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Statistics Calculator online

Calculate mean, median, mode, variance, standard deviation and more

Statistics Calculator logo
by
CHUNKY
MUNSTER
// Numbers (one per line or comma-separated)
0
Count (N)
0
Sum
-
Mean (Average)
-
Median
-
Mode
-
Std Deviation
-
Variance
-
Min
-
Max
-
Range

Using the Descriptive Statistics Tool

  1. Paste your numbers separated by commas, spaces, tabs or newlines.
  2. Toggle Sample / Population to choose the variance formula.
  3. Read the six descriptive statistics and the parsed-value count.
  4. Re-paste with corrections if the parsed count doesn't match what you expected.

Statistics Calculator provides a comprehensive dataset summary for any list of numbers. Paste your data in any format-comma, space, tab, or newline separated-and this math calculator instantly returns the mean, median, mode, range, variance, and standard deviation.

How the Data Analyzer and Dataset Summary Works

A toggle switches between sample (n−1) and population (n) variance and standard deviation. Use sample when your numbers are a subset of a larger group; use population when you genuinely have every value. The descriptive statistics engine parses negative numbers, decimals, and scientific notation accurately.

Frequently Asked Questions

When should I use sample standard deviation vs population?

Use sample (divide by n−1) when your numbers are a subset drawn from a larger population - almost all real-world data analysis. Use population (divide by n) only when you have literally every member of the group, e.g. all students in one specific class.

What does the calculator do if there's no mode?

When all values are unique, the mode is reported as "no mode". When two or more values tie for highest frequency, every tied value is listed (the dataset is bimodal, trimodal, etc.).

How are decimals and scientific notation parsed?

Standard JavaScript Number parsing applies. So 1.5, -0.003, 1e6, and 2.5E-4 all parse correctly. Localised numbers (1,5 for one-and-a-half, used in many European locales) are not - switch to dot decimal or use the comma as a separator only.

Why does the median look "wrong" for an even-numbered dataset?

For even-length data the median is the mean of the two middle values, not just the lower one. So the median of [1, 2, 3, 4] is 2.5, not 2 or 3.

Explore the full suite of Number tools and 290+ other free utilities at Chunky Munster with our Statistics Calculator.

// deep diveRead the guide →