Glossary › Maths and statistics
Standard deviation
A measure of how spread out a set of numbers is around their mean.
A small value means the numbers sit close to the mean; a large one means they are scattered. Ratio gives the sample standard deviation, which divides by one less than the number of values.
In Ratio
| You type | Ratio shows |
|---|---|
stdev(2, 4, 4, 4, 5, 5, 7, 9) | 2.1381 |