What are descriptive statistics?

Summary measures: mean (average), median (middle value), mode (most frequent), variance, standard deviation, min, max.

What if there is no mode?

If no value repeats, we show 'no mode' or list all values as having frequency 1.

Enter comma-separated numbers to get mean, median, mode, variance, standard deviation, min, and max.

Numbers (comma-separated)

What are descriptive statistics?: Summary measures: mean (average), median (middle value), mode (most frequent), variance, standard deviation, min, max.
What if there is no mode?: If no value repeats, we show 'no mode' or list all values as having frequency 1.

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Calculate C(n,r) — the number of ways to choose r items from n without order. Uses n!/(r!(n-r)!).

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Count how many permutations of n objects are even (expressible as an even number of swaps). For n ≥ 2, equals n!/2.