Statistics Quick-Read

Mean, median, mode, range, variance, and standard deviation (sample and population) for a list of numbers.

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Formula and source

Standard descriptive statistics. mean = sum / n; sample variance = sum((x_i - mean)^2) / (n-1); population variance = sum((x_i - mean)^2) / n; standard deviation = sqrt(variance).

Classical descriptive statistics; physical / mathematical fact. The sample-vs-population distinction is the Bessel-correction convention (Bessel 1838).

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This tile is built for trades and the adjacent professions in the Educators and K-12 group. The interactive calculator runs entirely in your browser. No account, no fee, no advertising, no tracking.

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