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sasgiaz
Quartz | Level 8

Hello again,

I've been doing a project where I use ARI(1,1) with outliers as the model for forecasting.

I'm planning to do the forecast manually through Ms. Excel but I find a problem.

So, here's the model.

models.PNG

The problem is I don't know what will happen to the 1/(1-B) if the I(49) valued as 1.

Thankyou so much for your consideration to help me solve this problem.

Best regards.

2 REPLIES 2
PaigeMiller
Diamond | Level 26

But you can plug-in the value 1 and see what will happen ...

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Paige Miller
sasgiaz
Quartz | Level 8

no, I mean since 1/(1-B) is as a constant, something must be doing to the equation before I plug in the valued of I(49).......because I'm going to count it manually

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