Statistics Calculator — Free Online Tool
Enter any list of numbers and instantly compute all descriptive statistics: count, sum, mean, median, mode, min, max, range, variance, standard deviation, Q1, Q3, and IQR. Accepts comma, space, semicolon, or newline-separated values.
100% client-side. No uploads. Your data never leaves your browser.
How to use Statistics Calculator
- Enter numbers separated by spaces, commas, or newlines.
- Click 'Calculate' to see all statistics instantly.
- Use presets for sample datasets.
- Copy any individual statistic with its copy button.
Frequently Asked Questions
What is the difference between population and sample variance?
This tool calculates population variance (divides by N). For sample variance (divides by N-1), multiply this variance by N/(N-1).
What is IQR?
Interquartile Range (IQR = Q3 − Q1) measures the spread of the middle 50% of data. It's resistant to outliers, unlike standard deviation.
How do I enter data?
Separate numbers with spaces, commas, semicolons, or newlines. Mixed separators are accepted.
Related tools
Related reading
Browse all free tools · theproductguy.in