# Wolfowitz inequality

From Encyclopedia of Mathematics

An inequality for the mathematical expectation of the square of the deviation of a statistical estimator from the true value of a parameter, obtained by the method of sequential analysis. The Wolfowitz inequality is the analogue of the Rao–Cramer inequality for samples of fixed size. It was obtained by J. Wolfowitz.

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[a1] | J. Wolfowitz, "The efficiency of sequential estimates and Wald's equation for sequential processes" Ann. Math. Statist. , 18 (1947) pp. 215–230 |

**How to Cite This Entry:**

Wolfowitz inequality. I.V. Romanovskii (originator),

*Encyclopedia of Mathematics.*URL: http://encyclopediaofmath.org/index.php?title=Wolfowitz_inequality&oldid=12460

This text originally appeared in Encyclopedia of Mathematics - ISBN 1402006098