Quote:
Originally Posted by darwinbulldog
It's an easy enough experiment to do. Just get a few hundred raw cards, randomly assign each of them to SGC or PSA, wait for them to come back, enter each of the individual grades, compare the SGC mean to the PSA mean (indepedent samples t-test), voila, you have your answer.
In practice it may reliably go in one direction for some issues and the other way for others, but I'd be interested in the main effect (i.e., who is more lenient on average).
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And even better way would be to submit that same group to one, note the grades, crack out and send to the other. Assuming none were damaged in the process you would have a definitive answer.
Finding some one to pay for and take the time to do all of this would be the tough part.
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