Mean, Median, Mode, Range Calculator
Enter a list of numbers to find the mean, median, mode, and range.
| Mean | 5 |
| Median | 4.5 |
| Mode | 4 |
| Range | 7 |
The Four Basic Measures
Mean is the arithmetic average of all the numbers. Median is the middle value once the numbers are sorted (or the average of the two middle values for an even-sized list). Mode is whichever value (or values) shows up most often - a data set can have no mode, one mode, or several. Range is simply the largest value minus the smallest, giving a quick sense of how spread out the data is.
When Each One Is Most Useful
Mean is affected by extreme outliers, so median is often a better "typical value" for skewed data (like incomes or house prices). Mode is most useful for categorical or repeating data, and range is a fast, simple check on the spread before diving into a full standard deviation calculation.