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Re: Pearson-r in SQL

From: -CELKO- <jcelko212_at_earthlink.net>
Date: 22 Dec 2004 15:49:09 -0800
Message-ID: <1103759349.210421.202020@z14g2000cwz.googlegroups.com> 





>> Suppose all the data you have are either (NULL, nonNULL) or

(nonNULL, NULL)


pairs. What is the corellation between x and y? <<



.. or (NULL, NULL).  I'd be inclined to give a NULL for that situation;
it feels right both from a gut feeling and from an SQL model of data.
Received on Wed Dec 22 2004 - 17:49:09 CST












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