Paste a list of numbers and get the mean, median, mode, and range at once, along with the count, sum, and standard deviation. Commas, spaces, or new lines all work.
Mean or median - which should I use?
Use the median when a few extreme values would drag the mean around. In the example above the mean is 18.5 but four of the six numbers are below 13. The two 40s pull the mean up. The median of 10.5 describes the list better.
Why does my list show no mode?
A mode only exists when one value appears more often than the rest. If every value appears once, or if they all tie, there is no mode. That is a valid answer, not an error.
Can a list have two modes?
Yes. A list with two values tied for most frequent is called bimodal, and this calculator names both. Three or more tied values are reported the same way.
How do I enter my numbers?
Commas, spaces, semicolons, and new lines all work, and you can mix them. Do not use a comma inside a number - type 1234, not 1,234, because the comma is read as a separator.
What does the standard deviation tell me?
It measures spread. A small value means the numbers cluster near the mean. A large value means they are scattered. This page uses the sample formula, dividing by one less than the count, which is what school and college statistics use.
Does this work for exam marks and cricket scores?
Yes, for any list of numbers. Paste your subject marks to get the average, or a batsman’s scores to see the mean against the median. A high score or two will show you exactly how much the mean is being flattered.