TABLE 16-13 Given Below Is the Monthly Time-Series Data for U.S. Retail

question 8

Short Answer

TABLE 16-13
Given below is the monthly time-series data for U.S. retail sales of building materials over a specific year.

The results of the linear trend, quadratic trend, exponential trend, first-order autoregressive, second-order autoregressive and third-order autoregressive model are presented below in which the coded month for the first month is 0:




-Referring to Table 16-13, what is the exponentially smoothed value for the first month using a smoothing coefficient of W = 0.5?

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