Mean, Median, Mode Calculator

Full descriptive statistics on any dataset. Paste numbers separated by commas, spaces, or newlines.

Statistics

Count

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Sum

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Mean

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Median

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Mode

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Range

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Min

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Max

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Q1 (25%)

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Q3 (75%)

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Sample SD

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Pop. SD

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When each is the "right" average

  • Mean — the workhorse. Sensitive to outliers; one billionaire in a room of 99 students moves the mean dramatically.
  • Median — robust to outliers. The middle value. House prices, salaries, anything with skew — report the median.
  • Mode — most common value. Useful when values are categorical (shoe sizes, survey ratings).

Sample vs population SD

If your numbers are the whole population, use the population SD. If they're a sample meant to estimate a larger population, use sample SD (divides by n−1, which corrects for the slight underestimate that comes from using your sample's mean rather than the true mean).