---
title: "Statistics Calculator — Mean, Median, Mode, Standard Deviation"
description: "Free statistics calculator. Enter a list of numbers to get mean, median, mode, range, variance, standard deviation (sample & population), and IQR instantly."
url: "https://worldcalculators.org/calculators/statistics/"
canonical: "https://worldcalculators.org/calculators/statistics/"
---

# Statistics Calculator

Free statistics calculator. Enter a list of numbers to get mean, median, mode, range, variance, standard deviation (sample & population), and IQR instantly.

## Quick answer

Mean = sum ÷ count. Median = middle value (sorted). Mode = most frequent. Std Dev = √variance. Use sample std dev (÷n−1) for data samples, population std dev (÷n) only when you have every data point. Excel's STDEV() = sample, STDEVP() = population.

## How descriptive statistics differ by curriculum

The formulas look the same worldwide, but which formula is taught as "standard" varies by country :
This calculator shows both — sample and population — so you always get the right answer regardless of which system you're working with.

Source: https://worldcalculators.org/calculators/statistics/
Markdown mirror of the HTML page. Prefer this URL for RAG; the interactive calculator still lives on the HTML page.