Average Calculator
Mean, median, mode, range, and standard deviation.
Separate with commas, spaces, or line breaks. Paste a column straight from a spreadsheet.
Read 8 values.
Mean (average)
11.875
8 values, sum 95
Spread
- Count
- 8
- Sum
- 95
- Minimum
- 3
- Maximum
- 25
- First quartile (Q1)
- 7
- Third quartile (Q3)
- 15
- Interquartile range
- 8
- Sample std deviation
- 7.0597
- Population std deviation
- 6.6037
- Sample variance
- 49.8393
Distribution
Values sorted low to high. Bar height is relative to the range.
Sorted values
3, 7, 7, 9, 12, 14, 18, 25
How the Average Calculator works
Paste any list of numbers to get all the common summary statistics at once. Mean, median, and mode answer different questions — when they disagree sharply, your data is skewed, and the median is usually the more honest summary.
Frequently asked questions
What is the difference between mean, median, and mode?
The mean is the sum divided by the count. The median is the middle value once sorted. The mode is the most frequent value. For 2, 3, 3, 10 the mean is 4.5, the median 3, and the mode 3 — the single large value pulls the mean away from where most of the data sits.
When should I use the median instead of the mean?
Whenever outliers or skew are present. Income, house prices, and response times are all reported as medians for this reason: a handful of extreme values would otherwise drag the mean somewhere unrepresentative.
What does standard deviation tell me?
How spread out the values are around the mean. A small standard deviation means values cluster tightly; a large one means they scatter. In roughly normal data, about 68% of values fall within one standard deviation of the mean and 95% within two.
What is the difference between sample and population standard deviation?
Population divides by n, sample divides by n − 1. Use sample when your numbers are a subset drawn from a larger group, which is the usual case. This calculator shows both.