why seasonal adjustment doesn't work?
Posted: 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?
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?