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If I am trying to find the mean of the top 50 schools average debt at...

If I am trying to find the mean of the top 50 schools average debt at graduation but for 3 of the schools the category says NA (not applicable) do I still divide by 50 or do I divide by 47?

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Answer #1

Yes you have to divide the sum by 47 since for the schools with NAs you don't have any value.

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