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power spectrum


If I have a string of data - let us say a time series of 200 observations - 
how can I find the power spectrum? I did Fourier[list] but have no idea what 
the output means.

Thank you for any help (please to my email address:
george at netvision.net.il)

George Szpiro

-- 

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George Szpiro
Neue Zürcher Zeitung (Switzerland)
POB 6278
Jerusalem 91060
Israel





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