montaguelord
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- Excel Version(s)
- Excel 2016
I have a series of GDP data from various countries from 1990 to 2023. I need to extend the series to 2050 by dragging the lower right-hand corner of the selected series to 2050.
Can anyone tell me what formula Excel 2016 uses to calculate (forecast) the series?
Also, is there a way to change the way that the series are extended (forecasted) by, for example, using ARMA or ARIMA formulas?
Thank you in advance for your help.
Can anyone tell me what formula Excel 2016 uses to calculate (forecast) the series?
Also, is there a way to change the way that the series are extended (forecasted) by, for example, using ARMA or ARIMA formulas?
Thank you in advance for your help.