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<p>variable X has Hotelling's T-squared distribution, , then:</p>

<p>where  is the <a href="page.php?w=F-distribution">''F''-distribution</a> with parameters p and m&nbsp;&minus;&nbsp;p&nbsp;+&nbsp;1.</p>

<p><big>Hotelling t-squared statistic</big></p>
<p>Let  be the <a href="page.php?w=sample_covariance">sample covariance</a>:</p>

<p>where we denote <a href="page.php?w=transpose">transpose</a> by an <a href="page.php?w=apostrophe">apostrophe</a>. It can be shown that  is a <a href="page.php?w=positive-definite_matrix">positive (semi) definite</a> matrix</p><p>
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