Definition:Deviation from Mean
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Definition
Let $S$ be a set of observations of a random variable $X$.
Let $x \in S$.
The deviation of $x$ from the mean is the difference between $x$ and the arithmetic mean $\bar x$ of $S$:
- $x - \bar x$
Sources
- 2014: Christopher Clapham and James Nicholson: The Concise Oxford Dictionary of Mathematics (5th ed.) ... (previous) ... (next): deviation