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<a accesskey="3" href="page.php?w=covariance_function&amp;p=2">3.Next</a>
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<p>In <a href="page.php?w=probability_theory">probability theory</a> and <a href="page.php?w=statistics">statistics</a>, the <b>covariance function</b> describes how much two <a href="page.php?w=random_variable">random variable</a>s change together (their <a href="page.php?w=covariance">covariance</a>) with varying spatial or temporal separation. For a <a href="page.php?w=random_field">random field</a> or <a href="page.php?w=stochastic_process">stochastic process</a> Z(x) on a domain D, a covariance function C(x,&nbsp;y) gives the covariance of</p><p>
<a accesskey="3" href="page.php?w=covariance_function&amp;p=2">3.Next</a>
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