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Subject: Re: Serious question


Author:
JD
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Date Posted: 12:35:12 08/07/17 Mon
In reply to: Calvin 's message, "Serious question" on 11:22:19 08/07/17 Mon

I was suggesting survivor bias as a possible for explanation for how Harvard could simultaneously be cited for a favorable team GPA while also having had a relatively low APR during Amaker's tenure.

Survivor bias distorts many data averages. If you only measure the GPA of the guys still on the Harvard roster, you're missing the guys who are out of school or otherwise not eligible. Obviously, this latter group is likely to have a lower GPA.

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Author:
mrjames
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Date Posted: 12:42:58 08/07/17 Mon

Survivor bias would need more "non-survivors" to be weeded out of the pool than are at play here. Again, one player can cause an APR to fall by 80 points. One player's low GPA being taken out wouldn't bias up the GPA of the survivors that much.

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