Use the following data and a stepwise regression analysis to predict y. In addition to the two independent variables given here, include three other predictors in your analysis: the square of each x as a predictor and an interaction predictor. Discuss the results of theprocess.
Answer to relevant QuestionsUse the x1 values and the log of the x1values given here to predict the y values by using a stepwise regression procedure. Discuss the output. Was either or both of the predictorssignificant?The U.S. Department of Agriculture publishes data annually on various selected farm products. Shown here are the unit production figures for three farm products for 10 years during a 20-year period. Use these data and a ...The U.S. Energy Information Administration releases figures in their publication, Monthly Energy Review, about the cost of various fuels and electricity. Shown here are the figures for four different items over a 12-year ...Following are time-series data for nine time periods. Use exponential smoothing with constants of .3 and .7 to forecast time periods 3 through 9.Let the value for time period 1 is the forecast for time period 2.Compute ...Use the data from Problem 15.15 to create a regression forecasting model using the first-differences data transformation. How do the results from this model differ from those obtained in Problem15.15?
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