Statistics Calculator
Enter a dataset and get a full statistical summary.
This tool is for informational and educational purposes only. It is not a substitute for professional financial, medical, legal, or engineering advice. See Terms of Service.
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Enter your numbers separated by commas or spaces. The calculator instantly computes a full statistical summary: mean, median, mode, standard deviation, variance, range, min, max, sum, and count.
About This Calculator
This general-purpose statistics calculator provides all the essential descriptive statistics for a dataset in one place. Descriptive statistics summarize the main features of your data: central tendency (mean, median, mode), spread (standard deviation, variance, range), and basic counts. These are the foundation for all further statistical analysis.
Frequently Asked Questions
What is the difference between mean, median, and mode?
Mean is the arithmetic average. Median is the middle value when sorted. Mode is the most frequent value. For symmetric data they are similar; for skewed data they can differ substantially.
Should I use population or sample standard deviation?
Use sample standard deviation (divides by n-1) when your data is a sample from a larger population. Use population standard deviation (divides by n) only when you have the entire population.
What does the range tell me?
The range (max - min) is the simplest measure of spread. It is sensitive to outliers and tells you nothing about the distribution of values between the extremes.