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Signed Deviation

The signed deviation is defined by

\begin{displaymath}
\Delta u_i \equiv (u_i - \bar u),
\end{displaymath}

so the average deviation is

\begin{displaymath}
\overline {\Delta u} = \overline {u_i-\bar u} = \overline {u_i}- \bar u = 0.
\end{displaymath}

See also Absolute Deviation, Deviation, Dispersion (Statistics), Mean Deviation, Quartile Deviation, Standard Deviation, Variance




© 1996-9 Eric W. Weisstein
1999-05-26