Yes, but it also depends on how far into the future you are trying to forecast. For what I do, I usually try to have at least 100 data points since I forecast
2 or 3 years ahead.
From: Guerrero, Rodrigo
To: '[hidden email]'
Sent: Fri Oct 23 11:20:51 2009
Subject: Re: Box-Jerkin Model
I have heard that 50 is the minimum, but I have done reliable forecastin with as little as 30 data points. It really depends on the accuracy you are trying to achieve. My low data models tend to be a bit wild on individual
forecasts but do well at a monthly or quarterly view.
Good luck.
Rodrigo
From: SPSSX(r) Discussion
To: [hidden email]
Sent: Fri Oct 23 08:30:18 2009
Subject: Box-Jerkin Model
|
I apologize for cross posting.
Does anyone know of an acceptable minimum data points in building ARIMA model?
Thanks
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