The least-squares regression equation ŷ = 98.1 + 5.0t has been fitted to the shipment data given here. Calculate the Durbin-Watson d statistic and test for positive autocorrelation of the residuals at the 0.05 level of significance. Comment on the appropriateness of using this model for this set of data.
Answer to relevant QuestionsThe least-squares regression equation ŷ = 15.2 + 10.7t has been fitted to the shipment data in the table. Calculate the Durbin-Watson d statistic and test for positive autocorrelation of the residuals at the 0.05 level of ...Fit a linear trend equation to the following data describing average hourly earnings of U.S. production workers. What is the trend estimate for 2013? The Producer Price Index values for plumbing fixtures and brass fittings from 2002 through 2007 are shown here. Convert the index numbers so that the base period will be 2002 instead of 1982. The annual number of international visitors to the United States from 2000 through 2007 is shown here. Year Visitors (millions) 2000........ 50.9 2001........ 44.9 2002........ 41.9 2003........ 41.2 2004........ ...Construct four-period and five-period centered moving averages for the quarterly revenues in Exercise 18.71. Are there any other entertainment or recreation companies for whom a four-period moving average might have such a ...
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