Q-statistics

[mayxanh]

I need to indentify and estimate an ARIMA model for my time series. When I look at the correlograms, sometimes the probabilities for the Q-statistics are not computed from lag 1 upto certain lags. Could someone please tell me what does that mean? The Q-statistics at those lags where probabilites are not calculated are significant or insignificant?


Thank you

[strypste]

Dear all

I have the same question. Somebody an idea?

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