Statistics calculators
12 calculators
Statistics calculators summarize lists of numbers—means, spread, and related descriptive measures—using the formulas shown next to each form.
Sample versus population denominators matter for variance. The featured average tool is a direct arithmetic mean; other pages add median, mode, or standard deviation. Stats calculators run in the browser with no account.
Descriptive statistics calculators
Means, medians, spread, and summary measures of a list.
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Average Calculator
Compute the arithmetic mean of a list of numbers.
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Coefficient of Variation Calculator
CV = SD / mean as a percent.
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Mean Median Mode Calculator
Find the mean, median, and mode of a data set.
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Percentile Rank Calculator
Percentile rank from counts below/at a score.
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Standard Deviation Calculator
Sample or population standard deviation and variance.
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Statistics Calculator
Summary stats: count, sum, mean, median, mode, min, max, stdev.
Inference calculators
z-scores, p-values, confidence intervals, and sample size.
Regression calculators
Correlation, linear fits, and related two-variable summaries.