Re: Pearson-r in SQL
From: -CELKO- <jcelko212_at_earthlink.net>
Date: 22 Dec 2004 15:49:09 -0800
Message-ID: <1103759349.210421.202020_at_z14g2000cwz.googlegroups.com>
Date: 22 Dec 2004 15:49:09 -0800
Message-ID: <1103759349.210421.202020_at_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 Thu Dec 23 2004 - 00:49:09 CET