Question: A second-order autoregressive model was fitted to quarterly data on the ratio of consumer installment debt to personal income in the United States. The estimated
A second-order autoregressive model was fitted to quarterly data on the ratio of consumer installment debt to personal income in the United States." The estimated model was X, 0.021 +1.74X,--.74X-2+ a The last two observations of this time series were X-13.217 X.-13.147 Obtain forecasts of XXX and X.-4
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