Thanks so much for the reply @dw_sas! This has helped tremendously and really closed a lot of the gaps I was struggling with. I suppose a final follow-up question pertains to the B notation still within the equation with the parameter estimates. I understand that this is just the backshift notation, "lag operator." But what becomes of it when using the model with the parameter estimates? This would mean it does not have a specific value, but still represents something else? What and/how do I put in its place in order to generate a value. ... View more