Statistics calculator (standard deviation)
Paste a list of numbers and see the mean, median, mode, standard deviation, variance, quartiles, range and coefficient of variation.
Standard deviation, mean, median and mode
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Statistics calculator (standard deviation): what it is for
Paste a list of numbers and the calculator shows the main descriptive statistics: mean, median, mode, standard deviation and variance (sample and population), minimum, maximum, range, first and third quartiles and coefficient of variation.
Numbers can be separated by spaces, commas, semicolons or one per line.
How to use
- Paste or type the numbers.
- Check the standard deviation and the other measures.
- Use the sorted list to check the data.
When to use it
- Do statistics homework.
- Analyze a class's grades.
- Check spreadsheet data.
Frequently asked questions
What is the difference between sample and population standard deviation?
Population divides the sum of squares by n and applies when you have all the data. Sample divides by n − 1 and is used when the data is a sample. The calculator shows both.
How do I separate the numbers?
With commas, semicolons, spaces or one per line. Use a decimal point (1.5, 2.7), or a decimal comma with spaces between numbers (1,5 2,7).
Is it really free?
Yes, 100% free. No sign-up, no subscription and no usage limits. All Tools123 tools are free and run right in your browser.