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Average Calculator
Calculate the mean, median, mode, sum and range of a set of numbers.
Quick answer
The mean is the sum of the numbers divided by how many there are. For 4, 8, 15, 16, 23 and 42 the sum is 108, so the mean is 108 ÷ 6 = 18. The median is the middle value when sorted (15.5 here), and the mode is the value that appears most often.
Step by step
How to use the Average Calculator
01
Enter numbers separated by commas or spaces.
02
See the mean, median, mode, sum and range.
Worked examples
Mean, median and mode compared
| Numbers | Mean | Median | Mode |
|---|---|---|---|
| 2, 3, 3, 5, 7 | 4 | 3 | 3 |
| 4, 8, 15, 16, 23, 42 | 18 | 15.5 | none |
| 10, 10, 20, 30 | 17.5 | 15 | 10 |
| 1, 2, 3, 100 | 26.5 | 2.5 | none |
Good to know
Which average should I use?
The mean uses every value but is pulled by outliers: one salary of $1 million raises the mean salary of a small team a lot. The median ignores how extreme the outliers are, which is why house prices and incomes are usually reported as medians. The mode suits categories, such as the most common shoe size.
Weighted averages
If values carry different weights, such as grades with different credit hours, multiply each value by its weight, add the results and divide by the total weight. A plain mean would treat every value as equally important.
FAQ
Frequently asked questions
How do I calculate the average of a list?
Add all the numbers and divide by how many there are, or paste them into the calculator separated by commas or spaces.
What is the range?
The largest value minus the smallest. For 4 to 42 the range is 38.
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