Statistics Calculator
Paste any list of numbers and instantly get count, sum, mean, median, mode, min, max, range, quartiles, and both population and sample standard deviation and variance. Runs in your browser.
About Descriptive Statistics
Computes count, sum, mean, median, mode, min, max, range, quartiles, and both population and sample standard deviation and variance. For financial growth estimates use theCompound Interest Calculator.
Secure & Private Client-Side
This tool runs entirely in your browser. No data is sent to any server, ensuring your information remains private and secure.
About Statistics Calculator
Paste any list of numbers and instantly get count, sum, mean, median, mode, min, max, range, quartiles, and both population and sample standard deviation and variance. Runs in your browser.
Frequently Asked Questions
What is the difference between sample and population std dev? expand_more
Population standard deviation divides by N and describes an entire group. Sample standard deviation divides by N-1 (Bessel's correction) and estimates the population from a sample.
How is mode calculated when there are ties? expand_more
All values that share the highest frequency are returned as modes. If every value is unique, mode is shown as "none".
How are quartiles computed? expand_more
Q1 uses the value at position 0.25 * N and Q3 uses 0.75 * N in the sorted list. This is a simple positional method; statistical packages may use slightly different interpolation.
Need to project financial growth? expand_more
Use the [Compound Interest Calculator](/tools/compound-interest-calculator/) for investment scenarios.
Is my data uploaded? expand_more
No. All computation happens locally in your browser.
Common Use Cases
- Surveys: Summarize Likert-scale or rating responses.
- Sports: Compare player or team performance statistics.
- Quality Control: Track mean, range, and standard deviation of measurements.
- Academics: Check class score distributions quickly.