Cramér-Rao inequality

Cramér-Rao inequality

[krə¦mā ′räu̇ ‚in·i‚kwäl·əd·ē]
(statistics)
An inequality that is the basis of a method for determining a lower bound to the variance of an estimator of a parameter.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.