Descriptive Statistics Calculator
Paste your numbers and get the main descriptive statistics, including sample and population standard deviation, clearly labelled.
Private by design: this tool runs 100% in your browser. Your files and text never leave your device, are never uploaded, and are never stored by Crazlee.
How to use
- Paste your numbers, separated by commas, spaces, or new lines.
- Click Calculate statistics.
- Read the mean, median, mode, range, and standard deviation — and check the sorted list.
Worked example
For 2, 4, 4, 4, 5, 5, 7, 9: count = 8, mean = 5, median = 4.5, mode = 4, range = 7, sample standard deviation = 2.138.
Frequently asked questions
Which standard deviation should I use?
For most research samples, use the sample standard deviation. Use the population value only when your numbers are the whole population, not a sample.
What if there is no mode?
If no value repeats, the tool says there is no mode. That is correct, not an error.
Can I paste data from a spreadsheet?
Yes. Copy a column of numbers and paste it here.
Does this do t-tests or ANOVA?
No. Those are planned for later phases. This tool covers descriptive statistics only.
Are my numbers uploaded?
No. All calculations happen in your browser.