均值计算器 — 公式
How to Calculate the Mean
Formula
Mean = (x₁ + x₂ + x₃ + ... + xₙ) / n
The arithmetic mean is the most common type of average. Add all values together and divide by the number of values.
计算示例
Find the mean of 12, 18, 24, and 30.
- Sum = 12 + 18 + 24 + 30 = 84
- Count = 4
- Mean = 84 / 4 = 21