I have 2 questions and I was wondering if you can help me out. 1. When we are simulating data using arima.sim, how do you choose the coefficients (phi and theta)? Can we just choose any number if we don't have a context to follow (as long as the sum of phi's is less than 1)? 2. Is there a way to simulate two correlated time series data by setting the correlation yourself? Thank you!
thank you so much!!! I was looking for an explanation like yours. It was plenty helpful.
Thanks! This was quite helpful
Thank you!
I have 2 questions and I was wondering if you can help me out.
1. When we are simulating data using arima.sim, how do you choose the coefficients (phi and theta)? Can we just choose any number if we don't have a context to follow (as long as the sum of phi's is less than 1)?
2. Is there a way to simulate two correlated time series data by setting the correlation yourself?
Thank you!
We are using acf and pacf to determine what you ask.
vey good .Thanks
very