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<a accesskey="3" href="page.php?w=Autocorrelation&amp;p=2">3.Next</a>
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<p><b>Autocorrelation</b>, sometimes known as <b>serial correlation</b> in the <a href="page.php?w=discrete_time">discrete time</a> case, measures the <a href="page.php?w=correlation">correlation</a> of a <a href="page.php?w=Signal_%28information_theory%29">signal</a> with a delayed copy of itself. Essentially, it quantifies the similarity between observations of a <a href="page.php?w=random_variable">random variable</a> at different points in its <a href="page.php?w=Domain_of_a_function">domain</a> (commonly, <a href="page.php?w=time">time</a>).</p><p>
<a accesskey="3" href="page.php?w=Autocorrelation&amp;p=2">3.Next</a>
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