I've monthly data, I adjusted it for monthdays and conducted a forecast. After that can I adjust it back and compare it with untransformed time serie?

  • $\begingroup$ Can you tell us some more details? How do you want to backtransform? $\endgroup$ – kjetil b halvorsen Jul 29 '20 at 19:51
  • $\begingroup$ Let's say: adjust time series to 30 days, forecast, adjust resulting time series to corresponding months. Hence the mean value will refer to real non averaged months length. My question is: could this "backtransform" affect the result in any way? $\endgroup$ – Tom Jul 29 '20 at 19:58

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