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Dec 8, 2018 at 8:14 comment added mlofton glad it helped.
Dec 7, 2018 at 7:25 vote accept MAOC
Dec 7, 2018 at 7:24 comment added MAOC Sorry, you're right. I forgot to put the hypotheses. This is true, I made a mistake thinking that when it was i = 1, I would have $E[\epsilon_t \epsilon_t']$ , but in fact, this never happens.
Dec 7, 2018 at 7:11 history answered mlofton CC BY-SA 4.0