ThisCalculator

Subject

Statistics calculators

Averages, spread, quartiles, z-scores and probability. Standard deviation and variance are sample values (n − 1) unless a page says population; quartiles use the median-of-halves method.

Calculators
2
Typical formula
s = √(Σ(x − x̄)² ⁄ (n − 1))
White dice and a fan of blank cards above coloured wooden blocks stacked like a bar chart

Start with these

Binomial Probability CalculatorProbability of exactly k successes0.117188Probability of exactly k successes in n independent trials with success chance p, plus the mean and standard d… Calculate the Standard DeviationSample standard deviation s13.491Paste a list of numbers to get the count, mean, sample standard deviation and population standard deviation.

All statistics calculators

CalculatorWhat it works outExample result
Binomial Probability CalculatorProbability of exactly k successes0.117188
Calculate the Standard DeviationSample standard deviation s13.491

Every calculator uses a standard formula and shows it. How the calculators work.