Date: Wed, 5 Jan 2005 19:59:08 -0800
Reply-To: BSchwartz <brian@HOMEBOYS.DK>
Sender: "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From: BSchwartz <brian@HOMEBOYS.DK>
Subject: correlation and time series
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I want to assess whether or not there is a significant correlation
between two variables 'spend' and 'score' across time. Sounds easy, or
However, my data is structured as follows:
400.000 customers' 'spend' and 'score' has been observed for 17 time
periods. That gives me 34 variables for each customer:
spend_1 spend_2 ...etc..... and score_1 score_2....etc...
The theory is that there is a positive correlation between spending
behaviour and scoring but I don't know how to prove it.
Can anyone put me on the right track ?
My question is both theoretically and practically (using SAS).