Data analysis tool
Statistics Calculator
Enter a numerical data set to calculate its center, spread, quartiles, and frequency distribution.
Separate values with commas, spaces, semicolons, or new lines. Up to 1,000 values are supported.
Summary statistics
Five-number summary
Quartiles use the median-of-halves method. For an odd-sized data set, the overall median is excluded from each half.
Ordered data and frequencies
| Value | Frequency | Relative frequency |
|---|
Histogram
Box plot
Whiskers show the minimum and maximum; the box shows Q1 through Q3.
What the measures mean
Mean: the sum divided by the number of values. It can be affected by outliers.
Median: the middle ordered value. It is resistant to extreme values.
Population standard deviation describes a complete population; sample standard deviation estimates spread when the data are part of a larger population.