免费统计均值计算器
计算数据集的算术平均数。
Arithmetic Mean
30.0000
Arithmetic Mean vs Value 1
公式
## How to Compute the Arithmetic Mean ### Formula **Mean = (Sum of all values) / (Number of values)** The arithmetic mean represents the central tendency of a dataset by distributing the total evenly across all observations. It is sensitive to extreme values, so outliers can shift the mean significantly.
计算示例
Find the mean of 10, 20, 30, 40, and 50.
- 01Sum all values: 10 + 20 + 30 + 40 + 50 = 150
- 02Count the values: 5
- 03Mean = 150 / 5 = 30
常见问题
What distinguishes the mean from the median?
The mean sums every observation and divides by the count, while the median is the middle value after sorting. The mean is pulled toward outliers; the median is not.
When is the arithmetic mean misleading?
When the dataset is heavily skewed or contains extreme outliers, the mean may not represent the typical value well. In such cases, the median or trimmed mean is often preferred.
Can the mean fall outside the range of the data?
No. The arithmetic mean always lies between the smallest and largest values in the dataset.
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