why seasonal adjustment doesn't work?

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evjulia
Posts: 2
Joined: Sat Nov 21, 2009 5:52 pm

why seasonal adjustment doesn't work?

Postby evjulia » Sat Nov 21, 2009 6:09 pm

I have a log y quarterly series and I find it has seasonality, so I go to proc---seasonal adjustment and choose "moving average method"---"ratio...." and get result"
Scaling Factors:

1 0.995321
2 0.999527
3 1.002346
4 1.002824

But I go back to that log y data "view"---"spreadsheet" and check the data one by one for several years, I didn't see any changes in data there? Why? where is the adjusted data?

startz
Non-normality and collinearity are NOT problems!
Posts: 3797
Joined: Wed Sep 17, 2008 2:25 pm

Re: why seasonal adjustment doesn't work?

Postby startz » Sat Nov 21, 2009 7:10 pm

The adjusted data is in a new series, as shown in the dialog.

evjulia
Posts: 2
Joined: Sat Nov 21, 2009 5:52 pm

Re: why seasonal adjustment doesn't work?

Postby evjulia » Wed Nov 25, 2009 3:07 pm

Thank you so much! I find it.


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