Dear All, Is there a Pearson correlation equivalent for time series data in SPSS Forecasting? I already posted this issue some few weeks ago, but I need to re-post the same by rephrasing the question so that everybody understands. Thank you. Eins |
What are you asking for? Let’s be specific. You have one or more series, call them X, Y, Z, etc. So you either compute auto correlation as lag k or cross correlations
at lag k. I looked at the algorithm book and the sample auto correlation, computationally, is a pearson correlation. The variance formula is different however. Gene Maguin From: SPSSX(r) Discussion [mailto:[hidden email]]
On Behalf Of E. Bernardo Dear All, Is there a Pearson correlation equivalent for time series data in SPSS Forecasting? I already posted this issue some few weeks ago, but I need to re-post the same by rephrasing the question so that everybody understands. Thank you. Eins ===================== To manage your subscription to SPSSX-L, send a message to
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Gene and ALL,
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Thank you for your helpful comments. The cross-correlation at lag k is the one that I have been looking for. However, I have a follow-up question. As cited in the SPSS manual, "the best approach is to create time series model for both series and then cross-correlate the residuals". I dont understand the rationale why we cross-correlate the noise residuals. Can somebody enlighten why the NOISE RESIDUALS are to be cross-correlated, rather than the original time series data? Thank you. E. Bernardo On Wednesday, July 16, 2014 2:08 AM, "Maguin, Eugene" <[hidden email]> wrote: What are you asking for? Let’s be specific. You have one or more series, call them X, Y, Z, etc. So you either compute auto correlation as lag k or cross correlations
at lag k. I looked at the algorithm book and the sample auto correlation, computationally, is a pearson correlation. The variance formula is different however.
Gene Maguin
From: SPSSX(r) Discussion [mailto:[hidden email]]
On Behalf Of E. Bernardo
Sent: Tuesday, July 15, 2014 12:36 AM To: [hidden email] Subject: Any Pearson correlation equivalent for time series data? Dear All,
Is there a Pearson correlation equivalent for time series data in SPSS Forecasting?
I already posted this issue some few weeks ago, but I need to re-post the same by rephrasing the question so that everybody understands.
Thank you.
Eins
===================== To manage your subscription to SPSSX-L, send a message to
[hidden email] (not to SPSSX-L), with no body text except the command. To leave the list, send the command SIGNOFF SPSSX-L For a list of commands to manage subscriptions, send the command INFO REFCARD
=====================
To manage your subscription to SPSSX-L, send a message to
[hidden email] (not to SPSSX-L), with no body text except the
command. To leave the list, send the command
SIGNOFF SPSSX-L
For a list of commands to manage subscriptions, send the command
INFO REFCARD
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