how to find if time series fits if i fit a time series with r what model do i use what time series does r use what model should i use for epsilon how to test whether the fit is valid? how do you tell that the fit is valid how to fit time series with a time sequence in r how do you know if the fit is valid for an r time series when to use mad model in r how do you know if a time series is valid how do i know if a time series is valid if you fit a time series, what is the residual correlation how to test for validity in r time series if I fit a time series with a ma model how do i know if this fit is valid? how to determine if time series model is valid how to tell when a time series fit is valid r how do i know if i have a time series how to find the fit for a time series how do i measure time series if i fit a time series to an r model how can i tell whether the fit is valid