Average Calculator
The Average Calculator computes the mean, median, mode and sum of a set of numbers.
Average Calculator
What the result means
The mean is the arithmetic average. The median is the middle value. The mode is the most frequent value.
How to use this calculator
- 1Enter numbers separated by commas.
- 2Press Calculate to see the statistics.
The formula
The calculation uses a standard, verifiable formula. Here it is in its simplest form.
Mean = Sum / Count
Median = middle value when sorted
Mode = most frequent value
What each variable means
| Symbol | Name | Description |
|---|---|---|
| Σ | Sum | Sum of all numbers. |
| n | Count | Number of values. |
Step-by-step example
Example: 10, 20, 30, 40
Numbers:10, 20, 30, 40
- 1Sum = 100
- 2Mean = 100 / 4 = 25
- 3Median = (20 + 30) / 2 = 25
Result
Mean = 25, Median = 25
What changes the result
- Outliers can significantly affect the mean.
Edge cases to be aware of
Unusual situations handled correctly
- Empty input results in 0.
- Single number: mean = median = mode = that number.
Common mistakes
Avoid these errors
- Using mean when median is more appropriate for skewed data.
Assumptions
- Numbers are separated by commas.
Limitations
- Does not calculate weighted averages.
Frequently asked questions
What is the difference between mean, median and mode?+
Mean is the arithmetic average. Median is the middle value when sorted. Mode is the most frequent value.