LINQ Equivalent for Standard Deviation

Posted by Steven on Stack Overflow See other posts from Stack Overflow or by Steven
Published on 2010-02-12T17:48:21Z Indexed on 2010/05/20 4:40 UTC
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Does LINQ model the aggregate SQL function STDDEV() (standard deviation)?

If not, what is the simplest / best-practices way to calculate it?

Example:

  SELECT test_id, AVERAGE(result) avg, STDDEV(result) std 
    FROM tests
GROUP BY test_id

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