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st: ACPLOT vs AC

From   "Macneill, Stephanie J" <[email protected]>
To   "'[email protected]'" <[email protected]>
Subject   st: ACPLOT vs AC
Date   Wed, 15 Oct 2003 13:39:31 +0100

Hello. I have some time series data and would like to check whether there is
any autocorrelation in my residuals. I generated a correlogram using AC and
found that none of the autocorrelations were outside of the 95% confidence
bands. When I repeated the analysis using ACPLOT I found that some of my
points were outside of the SE bands. Which analysis should I be relying on?
Why is there a difference?

Any tips would be greatly appreciated.

Kind regards,
Stephanie MacNeill

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