Mean, Median, Mode Calculator — Dataset Statistics
Mean
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Median
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Mode
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Range
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Std Dev
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Variance
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Sum
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Count
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Min/Max
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Sorted Data
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Understanding Mean, Median, Mode
The mean is the sum divided by count. The median is the middle value when sorted. The mode is the most frequent value. These three measures describe the center of your data from different perspectives.
Range is max minus min. Variance averages squared deviations from the mean. Standard deviation is the square root of variance, keeping the same units as the data.
The mean is sensitive to outliers; the median is robust. These statistics are foundational across data analysis, research, and decision-making in every field.
Frequently Asked Questions
What is the difference between mean and median?
Mean is the average; median is the middle value when sorted. Mean is affected by outliers; median is not.
When should I use population vs sample std dev?
Population (divide by N) for the entire group; sample (divide by N-1) for a subset.
What if there is no mode?
If every value appears equally often, there is no mode.
How is variance related to standard deviation?
Std dev is the square root of variance.