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<p>[QUOTE="messydesk, post: 3627588, member: 1765"]The purpose of the test is to see if a group can arrive at the same conclusion as a TPG. If this test is only going to be done for 25 coins, then the coins need to be selected to be representative of a typical grading event, with outliers or grading anomalies excluded. If a random selection of a coin shows one that looks way off, it should be rejected, as the results of the study will show that for that coin, the hive mind and TPG didn't match, but not give insight as to why. If we were using 2500 coins, we might find that the number of coins for which this happened told us something about TPG tendencies (or Heritage's photography department), but that won't be possible with 25, nor is it the intended purpose of the study. Perhaps rather than stating that he'd be picking coins which he though were accurately graded, he should have said that coins that seemed inaccurately graded or had uncharacteristically poor photos would be excluded.[/QUOTE]</p><p><br /></p>
[QUOTE="messydesk, post: 3627588, member: 1765"]The purpose of the test is to see if a group can arrive at the same conclusion as a TPG. If this test is only going to be done for 25 coins, then the coins need to be selected to be representative of a typical grading event, with outliers or grading anomalies excluded. If a random selection of a coin shows one that looks way off, it should be rejected, as the results of the study will show that for that coin, the hive mind and TPG didn't match, but not give insight as to why. If we were using 2500 coins, we might find that the number of coins for which this happened told us something about TPG tendencies (or Heritage's photography department), but that won't be possible with 25, nor is it the intended purpose of the study. Perhaps rather than stating that he'd be picking coins which he though were accurately graded, he should have said that coins that seemed inaccurately graded or had uncharacteristically poor photos would be excluded.[/QUOTE]
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