## DEVIATION

### Deviation

In mathematics and statistics,**deviation**is a measure of difference between the observed value of a variable and some other value, often that variable's mean. The sign of the deviation, reports the direction of that difference . The magnitude of the value indicates the size of the difference.

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### deviation

#### Noun

- The act of deviating; a wandering from the way; variation from the common way, from an established rule, etc.; departure, as from the right course or the path of duty.
- The state or result of having deviated; a transgression; an act of sin; an error; an offense.
- The voluntary and unnecessary departure of a ship from, or delay in, the regular and usual course of the specific voyage insured, thus releasing the underwriters from their responsibility.
- The shortest distance between the center of the target and the point where a projectile hits or bursts.
- For interval variables and ratio variables, a measure of difference between the observed value and the mean.
- The signed difference between a value and its reference value.

*The above text is a snippet from Wiktionary: deviation*

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and as such is available under the Creative Commons Attribution/Share-Alike License.