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<a accesskey="3" href="page.php?w=Estimation_theory&amp;p=2">3.Next</a>
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<p><b>Estimation theory</b> is a branch of <a href="page.php?w=statistics">statistics</a> that deals with estimating the values of <a href="page.php?w=Statistical_parameter">parameters</a> based on measured empirical data that has a random component.  The parameters describe an underlying physical setting in such a way that their value affects the distribution of the measured data. An <a href="page.php?w=estimator">estimator</a> attempts to approximate the unknown parameters using the measurements.In estimation theory, two approaches are generally</p><p>
<a accesskey="3" href="page.php?w=Estimation_theory&amp;p=2">3.Next</a>
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