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<p>[QUOTE=&quot;V. Kurt Bellman, post: 2621379, member: 71723&quot;]The OP&#039;s lack of math skills is what annoys me about this thread. If each grader is accurate to 80% (0.80) then if two or three INDEPENDENT graders look at it, the &quot;error&quot; rate will NOT BE 20%!!</p><p><br /></p><p>For two independent graders, the error rate becomes 0.2 x 0.2 or 0.04!!&nbsp; In other words, if two graders look at it, the chance at least one of them gets it right is instantly 96%!!! Add a finalizer and it goes up even more!!!</p><p><br /></p><p>Math can be our friend if we just learn it. This is why multiple judges, whether it be for coins, exhibits, Olympic diving, or appellate legal cases, are so important. It&#039;s also why judges&#039; conferences are so important when there is disagreement.[/QUOTE]</p><p><br /></p>

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