what is a metric of arima when using arima what is the difference between the estimating error and the predicting error? how to model a variance what model has an estimation error and how to estimate it in arima arima estimating error when using arcima to estimate the variance arima estimating error predicting error in arima calculate error rate arima how far ahead is the forecast when using arima how to model arima what is the estimation error in arima what rma models error what to use to estimate the error in arima what is the difference between argami and estimator error how to estimate uncertainty arima which model uses a parameter called mdl what is the argama model calculate residuals of model variance which parameter in ARIMA is used for forecasting?