0
$\begingroup$

This question already has an answer here:

I have run a ITS analysis on my dataset but I am unable to know which ARMA process to use. Please help understand how to select the ARMA process. I'm stuck.

enter image description here

$\endgroup$

marked as duplicate by gung Apr 18 '18 at 13:55

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

  • $\begingroup$ post your dataset $\endgroup$ – Tom Reilly Apr 18 '18 at 13:46
  • $\begingroup$ I think you will find the information you need in the linked thread. Please read it. If it isn't what you want / you still have a question afterwards, come back here & edit your question to state what you learned & what you still need to know. Then we can provide the information you need without just duplicating material elsewhere that already didn't help you. $\endgroup$ – gung Apr 18 '18 at 13:56
  • $\begingroup$ I want to run a gls regression model and i wanted to know from the ACF-PACF plots above, which lag should I used for autocorrelation modeling? $\endgroup$ – Evaline Apr 18 '18 at 13:56
  • $\begingroup$ gung - not every aspect of ARIMA model is covered in that post. What about level shifts? what about variance change? what about seasonal pulses? what about changes in trends? $\endgroup$ – Tom Reilly Apr 18 '18 at 14:44

Browse other questions tagged or ask your own question.