what state is a arma system which state space model is best to simulate how to simulate arma processes in stat model why is it necessary to simulate arma processes how to compute the observational variance on a state space model if a model is simulated how many observations are required? can you simulate state space when evaluating the state space model, which process does not require empirical data? how to determine empirically how many observations are required for a state space model to be accurate? how many observation does it take to simulate arma process how to simulate state space model how many observations in a state space model how to calculate observational variances based on arma process how can i calculate the observed error variance of the state space model how do you get the statistically averaged mean x(t) from the state space model why is it necessary to determine empirically how many observations for a state space model? how to calculate state variance and observation what is the state of the space model how to calculate state error variances and state error variances using static state space model simulations of state space model