How to Calculate the Mean (Average)

The arithmetic mean is the sum of all values divided by the count. It is the most common measure of central tendency but sensitive to outliers.

Step-by-step

1. List all data values.
2. Add them together to get the sum (Σx).
3. Count the number of values (n).
4. Divide sum by count: x̄ = Σx / n.
5. For grouped data: x̄ = Σ(f × x) / Σf where f is frequency.
6. Use our Mean Calculator for instant results with large data sets.

Open the Mean Calculator to apply these steps with your own numbers instantly.

Frequently asked questions