Statistics Calculators

Statistical calculators for probability, distributions, hypothesis testing, regression, and data analysis.

Descriptive

Frequency Distribution Calculator Count occurrences of each unique value in a dataset and create a frequency distribution. Enter comma-separated data values to get frequencies, relative frequencies (%), and cumulative frequencies.

Data

Histogram Bin Width Calculator Calculate optimal histogram bin width using Sturges' rule or Scott's rule.

Averages

Mean Calculator The Mean Calculator finds the arithmetic mean (average) of a list of numbers, along with the sum and count. Enter your values separated by commas.

Hypothesis Testing

One-Way ANOVA Calculator The One-Way ANOVA Calculator tests whether the means of three groups differ more than you'd expect by chance. It compares the variation between group means with the variation within groups and returns the F-statistic, sums of squares, and degrees of freedom. The formula used is: F = (SS_between ÷ df_between) ÷ (SS_within ÷ df_within), with df_between = k − 1 and df_within = N − k.