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<?php $frequency = 19; $resultsCount = 319000; $result = (pow($frequency/2, 2) / $resultsCount - (pow($frequency/2, 2) / $resultsCount) * ((0 + 0 + 0)*3 /100)) * 100; var_dump($result);
Output for git.master, git.master_jit, rfc.property-hooks
float(0.028291536050156742)

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