Calculators & Tools

Median Calculator middle value Find the median (middle value) of any data set, plus quartiles and IQR. Enter your numbers […]

Mean Calculator average Find the mean (average) of any list of numbers, with the sum and count shown. Enter your

P-Value Calculator z & t Turn a z-score or t-score into a p-value for one- or two-tailed tests. Test statistic

Integral Calculator ∫ definite Compute the definite integral (area under f(x)) from a to b — numerically and reliably. Function

Derivative Calculator d/dx Differentiate any function and (optionally) evaluate the derivative at a point. Function f(x) Evaluate at x =

Z-Score Calculator + PERCENTILE Find the z-score, percentile and probability from a value & standard deviation — or straight from

Standard Deviation Calculator SAMPLE + POPULATION Enter any list of numbers to get the standard deviation, variance, mean, median, mode