Average Calculator
Enter any list of numbers to instantly see mean, median, mode, range, and standard deviation.
Enter a list of numbers to get the complete descriptive statistics: mean (arithmetic average), median (middle value), mode (most frequent), range (max − min), variance, and population standard deviation.
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Last reviewed: April 2026Report an error
6 numbers · Sum: 108
Mean (Average)
18
Mean: 18 · Median: 15.5 · Mode: none · Range: 38
Mean
18
Median
15.5
Mode
—
Range
38
Min
4
Max
42
Std Dev (pop)
12.3153
Variance
151.6667
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How to Use This Average Calculator
- Type your numbers separated by commas (e.g., 5, 10, 15, 20).
- Read the mean, median, mode, and range.
- See the variance and standard deviation for spread analysis.
Frequently Asked Questions
- The mean (average) sums all values and divides by count. The median is the middle value when sorted. For skewed data (like income), median better represents the "typical" value because it's not pulled by outliers.
- When all values appear exactly once. This calculator returns no mode in that case. If two values tie for most frequent, both are reported.
- This calculator uses population standard deviation (divides by N). For sample standard deviation (divides by N-1, used when your data is a sample from a larger population), multiply the result by √(N/(N-1)).
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