The data file Housing Starts shows private housing units started per thousand of population in the United States over a period of 24 years. Use a computer to prepare a time plot of this series and comment on the components of the series revealed by this plot.
Answer to relevant Questionsa. Show that the centered s-point moving average series of Section 16.2 can be written as follows: b. Show that Discuss the computational advantages of this formula in the seasonal adjustment of monthly time series. a. If forecasts are based on simple exponential smoothing, with x`t denoting the smoothed value of the series at time t, show that the error made in forecasting xt, standing at time (t – 1), can be written as follows: et ...The data file Quarterly Earnings shows quarterly sales of a corporation over a period of 6 years. Use the Holt-Winters seasonal method to obtain forecasts of sales up to eight quarters ahead. Employ smoothing constants α = ...The data file Fargo Electronics Earnings shows quarterly sales of a corporation over a period of 6 years. a. Draw a time plot of this series and discuss its features. b. Use the seasonal-index method to seasonally adjust ...Using the data in the file Macro2010, develop and autoregressive model for the prime interest rate. First, use the data for the period 1980, first quarter, through 2000, fourth quarter, to forecast for the quarters in years ...
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