Statistics
Mean Absolute Deviation Calculator
Use this mean absolute deviation calculator to measure the average absolute distance from the mean.
Separate values with commas, spaces, or semicolons.
Mean absolute deviation
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- Count
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- Mean
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- Minimum
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- Maximum
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- Range
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- Sum absolute deviations
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- Mean absolute deviation
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Student quick launch
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Study path
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What the mean absolute deviation calculator solves
Use this mean absolute deviation calculator to measure the average absolute distance from the mean.
Formula
How to use it
- Enter a dataset as numbers separated by commas, spaces, or semicolons.
- Choose sample or population when the statistic uses a different denominator.
- Use the sorted data, count, mean, and work lines to check the result.
How to read the answer
Mean absolute deviation is in the original data units, so it is often easier to read than variance.
Common mistakes and edge cases
- Use absolute values before adding deviations.
- Mean absolute deviation from the mean is not the same as median absolute deviation.
- Outliers can still increase MAD, though not as sharply as squared-deviation measures.
Worked examples
Classroom dataset
Mean absolute deviation
Mean absolute deviation = 2.8
Includes negatives
Mean absolute deviation
Mean absolute deviation = 3.2
Frequently asked questions
Is mean absolute deviation the same as standard deviation?+
No. Standard deviation squares deviations before averaging, while MAD averages absolute distances.
Can MAD be zero?+
Yes. It is zero only when every value in the dataset is the same.
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Last updated: May 15, 2026