Descriptive Statistics Calculator

How this is calculated

You enter a list of numbers separated by commas, spaces or new lines. The tool parses them, discarding anything that is not a finite number, and treats the rest as your data set. The count (n) is simply how many valid numbers it found, and the sum is all of them added together.

The mean is the sum divided by n. The median is the middle value after sorting — for an even count it averages the two central values. The mode is the value (or values) that occurs most often; if every value appears equally it is reported as none. The range is the largest value minus the smallest. Variance measures average squared distance from the mean: it sums (x − mean)² and divides by n for the population figure, or by n − 1 for the sample figure (an unbiased estimate when your data is only a sample). Standard deviation is the square root of variance, returning the spread to the original units.

The numbers are treated as exact and unitless, with no weighting, outlier removal, or rounding of inputs; results are shown to four decimal places.