How to Calculate Average: Arithmetic Mean Explained
Last updated: 2026-09-11 • Editorial Staff
The average (arithmetic mean) is a central summary metric representing a set of numerical data.
Average Formula
Average = Sum of All Values ÷ Total Number of Values
Example: For test scores 80, 90, and 70: Sum = 240, Count = 3, Average = 240 ÷ 3 = 80.
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