Statistics Calculator
Free Online Statistics Calculator
Quickly analyze any set of numbers with our free statistics calculator. Enter your data and instantly see the count, sum, mean, median, mode, range, minimum, maximum, standard deviation (both population and sample), and variance. All results update in real time as you type, with no page reloads or sign-ups required.
How to Use
Enter your numbers in the text area above, separated by commas or newlines. The calculator automatically parses valid numbers and ignores blank entries. All statistics are computed instantly and displayed in clearly labeled cards. The sorted data section at the bottom shows your numbers in ascending order.
FAQ
What is the difference between population and sample standard deviation?
Population standard deviation divides by N (the total count), while sample standard deviation divides by N-1 to correct for bias when working with a sample of a larger population. Use population when your data includes every member of the group, and sample when your data is a subset.
What happens if there is no mode?
If every value in the data set appears exactly once, there is no mode and the calculator displays "None." If multiple values tie for the highest frequency, all of them are shown.
How is the median calculated for an even number of values?
When the data set has an even number of values, the median is the average of the two middle numbers after sorting. For example, the median of 1, 3, 5, 7 is (3 + 5) / 2 = 4.
Can I paste data from a spreadsheet?
Yes. Copy a column of numbers from Excel or Google Sheets and paste it directly into the text area. Each row will be treated as a separate number.