nT 3. Suppose {Uit}j=1,t=1 be i.i.d. variables with mean zero and variance o2. Show that for each i, Awit is autocorrela
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nT 3. Suppose {Uit}j=1,t=1 be i.i.d. variables with mean zero and variance o2. Show that for each i, Awit is autocorrela
nT 3. Suppose {Uit}j=1,t=1 be i.i.d. variables with mean zero and variance o2. Show that for each i, Awit is autocorrelated. That is, AUit is correlated to some of its past values. E.g., it is enough to calculate Cov (Awit, AUit-1) and Cov (AUit, Awit 2) to see if any of these are non-zero.
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