[Gretl-users] need help regarding ARIMA forecasting
Hi all
I am forecasting on a 25 months sales data, taking 24 months data to fit the
model and 1 month for forecasting
I am getting some negative values in the forecast which is not possible so
how to report them, or how to calcualte RMSE, MAPE etc.
Thanks & Regards
Manish
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