diff between ACF and PACF

[podarum]

I'm attempting to learn about time series modeling and apply it once I know more.. but in laymans terms what is considerdby ACF and PACF and how to read it.?  and what is and how do you aplly the p d q in ARIMA ?  thanks

[Snurre_SAS · Accepted solution]

The Duke University site contains the following online course: http://www.duke.edu/~rnau/411home.htm

One of the sections deals with the ACF and the PACF: http://www.duke.edu/~rnau/411arim3.htm

Hope this helps.

Regards,

Snurre