shelf percentile question

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moxochomp

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Just a question about the raw score vs percentile. I was wondering if anyone knew what was with the score sheet saying the mean is 70 and the standard deviation was 7, when that never correlates with percentile.

For example, I got 76 on the psych shelf and was told it was 52nd percentile. If it was 70 +/- 7, that should be around 80th percentile.
 
It depends. For some "easier" subjects such as psych, the raw score avg seems to be a bit higher
 
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