CalcMean Calculator
Last updated: 2026-05-09
The Mean Calculator is a free statistics calculator. Mean Calculator. Free online calculator with formula, examples and step-by-step guide. Analyze your data instantly with precise statistical formulas.
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Common Sizes — Click to Fill
| Value 1 | Value 2 | Value 3 | Value 4 | Value 5 | Value 6 | Value 7 | Value 8 | Value 9 | Value 10 | |
|---|---|---|---|---|---|---|---|---|---|---|
| Muestra pequena | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 |
| Datos uniformes | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 |
| Datos dispersos | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 |
| Muestra grande | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 |
| Valores atipicos | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 |
What is the arithmetic mean?
The arithmetic mean (or average) is the value obtained by summing all data in a set and dividing by the count. It's the most widely used measure of central tendency in statistics, science, economics, and daily life.
Arithmetic mean formula
Mean (x̄) = (x₁ + x₂ + ... + xₙ) ÷ n
Where n is the number of values.
Practical example
Student grades in 5 tests: 7, 8, 6, 9, 5
- Sum: 7 + 8 + 6 + 9 + 5 = 35
- Mean: 35 ÷ 5 = 7.0
Mean, median, and mode: when to use each
- Mean: Best for symmetric data without outliers.
- Median: More robust against outliers (e.g., median income vs mean income).
- Mode: For categorical data or most frequent values.
Types of mean
- Arithmetic mean: Sum ÷ n (most common).
- Weighted mean: Each value has a different weight.
- Geometric mean: nth root of the product — used for growth rates.
- Harmonic mean: For rates and speeds.