Statistics

Mean (Average)

Formula

Mean = (Sum of all values) / (Number of values)

What is Mean (Average)?

The mean, or average, is the sum of all values divided by the number of values. It is the most common measure of central tendency.

Variables

M
Mean — The average value

Worked Examples

Example 1

Find the mean of 4, 8, 12, 16, 20.

Solution:

Mean = (4 + 8 + 12 + 16 + 20) / 5 = 60 / 5 = 12

Frequently Asked Questions

Related Formulas

Median = Middle value of sorted data

Mode = Most frequently occurring value

Range = Maximum value − Minimum value

Standard Deviation

σ = √(Σ(xᵢ − μ)² / N)

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