Statistics Calculator
Compute mean, median, mode, and range from a list of numbers separated by commas.
Mean, median, mode, and range
Enter numbers separated by commas and the calculator will analyze the distribution.
Mean:
Median:
Mode:
Range:
Four ways to summarize a data set
Mean is the arithmetic average (sum ÷ count). Median is the middle value when the data is sorted (or the average of the two middle values for an even-sized data set) — it's less affected by extreme outliers than the mean. Mode is the most frequently occurring value (there can be more than one, or none if every value appears equally often). Range is simply the largest value minus the smallest, a quick measure of the data's total spread.
Frequently asked questions
Why would I use median instead of mean? Median resists distortion from outliers — for skewed data like household income (where a few very high values can pull the average up), median often gives a more representative "typical" value than the mean.
What does "No mode" mean in the result? It appears when every value in the data set occurs exactly once (or all values occur the same number of times), so there's no value that stands out as more frequent than the rest.
Is range a good measure of spread? It's a very simple one, but it only considers the two extreme values and ignores everything in between — standard deviation (see the Standard Deviation Calculator) gives a more complete picture of how spread out the data is overall.