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<p>that the probability P(r) of a polymer chain in the <a href="page.php?w=statistical_population">population</a> to have distance r between the ends will obey a characteristic <a href="page.php?w=Probability_distribution">distribution</a> described by the formula</p>

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: </p>

<p>where  is the <a href="page.php?w=mean">mean</a> of .</p>

<p>The average (<a href="page.php?w=root_mean_square">root mean square</a>) end-to-end distance for the chain, , turns out to be  times the square root of&nbsp;N &mdash; in other words, the average distance</p><p>
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