24 Calk24

Statistics Calculator

Calculate statistical measures. Standard deviation, variance, quartiles and more.

Updated 2025 Data stays local

Result

---

Note: These calculations are for informational purposes only and do not replace professional tax or financial advice. All information without guarantee.

Frequently Asked Questions

What is standard deviation?

Standard deviation measures how spread out values are from the mean. A low standard deviation means values cluster near the mean. A high one means they are more spread out.

What is the difference between population and sample statistics?

Population statistics describe the entire group. Sample statistics describe a subset and include corrections (like using n-1 in variance) to estimate population parameters from the sample.

What is the Statistics Calculator?

The statistics calculator computes statistical measures: mean, standard deviation, variance, median, quartiles and range.

How does the Statistics Calculator work?

Enter your data series. The calculator determines all common descriptive statistics: location parameters (mean, median, quartiles) and dispersion parameters (variance, standard deviation, range, interquartile range).

Key Data and Facts

Standard deviation = square root of variance. 68-95-99.7 rule for normal distributions: 68% of values lie within +/- 1 standard deviation of the mean.

Related Calculators