Average Calculator
Summarize an equally weighted numeric list with its arithmetic mean and basic extent. The count, sum, minimum, maximum, and range remain visible so the result can be checked directly.
How to use the Average Calculator
Enter a comma-, space-, or line-separated list of numeric observations.
Review data entry, units, missing values, duplicate observations, outliers, and whether a weighted mean is actually required.
Read arithmetic mean, sum, count, minimum, maximum, and range.
Formula
Arithmetic mean = Σxᵢ ÷ n, where n is the entered count. Minimum and maximum are the smallest and largest entries, and range = maximum − minimum.
Example
For 2, 4, 7, and 11, the sum is 24, the count is 4, and the arithmetic mean is 24 ÷ 4 = 6.
Assumptions and limitations
- Every entered observation receives equal weight, and blank or nonnumeric values are rejected rather than silently treated as zero.
- Average Calculator treats the entered values as estimates and does not infer missing project, account, or personal details.
- Calculations retain working precision except where the cited method requires an intermediate rounding step; displayed values are then formatted separately. Source rules and dated rates must be rechecked when they change.
Sources
- OpenStax: Introductory Statistics 2eMean, deviation, probability, and binomial-distribution formulas. Reviewed 2026-08-14.
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Frequently asked questions
How does the Average Calculator work?
Arithmetic mean = Σxᵢ ÷ n, where n is the entered count. Minimum and maximum are the smallest and largest entries, and range = maximum − minimum.
What information should I enter in the Average Calculator?
Enter a comma-, space-, or line-separated list of numeric observations, then verify data entry, units, missing values, duplicate observations, outliers, and whether a weighted mean is actually required.
What should I verify before using this Average Calculator result?
Every entered observation receives equal weight, and blank or nonnumeric values are rejected rather than silently treated as zero.
Reviewed 2026-08-14 · mean-and-range-v2 · content-2026-08-14 · Trusty Calculator Editorial Team