what is a process ma or rs when would an ar process be best modelled what is an example of an ma process when does an acf process need to be modeled? when would one of the following be an r process? what's the difference between an ar process and an ana process what is the difference between a process and ar under which circumstances is an ar process appropriate? when is an a process an ma process or an ar process when does a process depend on previous values of itself and is an ar process? which model is an example of an a/an process? what is the difference between an AR model and an MA process which is the difference between the acf and rr process? what is the difference between ma process and arc process? under what circumstances is the a-process or the-are process appropriate? what is the difference between an ma and an ar difference between a process and an ar process why is a process called an ma process? which is a process that is an ar process? when is an MA or AR process appropriate