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stationary pleaze help!!!!!!

Posted: Wed Aug 31, 2011 5:16 pm
by des_poi_na1988
how can i understand if a time serie is nonstationary in the variance from the time-plot? pleaze help me :(

Re: stationary pleaze help!!!!!!

Posted: Wed Sep 07, 2011 10:22 pm
by isaiah
You can do it graphically, using autocorrelation or unit test. Which version are you using?

Isaiah