Using the data in the file Macro2010, develop an autoregressive model for imports. First, use the data for the period 1970, first quarter, through 2000, fourth quarter, to forecast for the quarters in years 2001-2003. Then use the data from 1970, first quarter, through 2007, fourth quarter, to forecast the quarters in the years 2008 and 2009. Discuss the differences in the accuracy of the forecasts compared to the actual results and indicate reasons for these differences.
Answer to relevant QuestionsThe data file Gold Price shows the year-end price of gold (in dollars) over 14 consecutive years. Compute a simple, centered 3-point moving average series for the gold price data. Plot the smoothed series and discuss the ...A small town contains a total of 1,800 households. The town is divided into three districts, containing 820, 540, and 440 households, respectively. A stratified random sample of 300 households contains 120, 90, and 90 ...Mean household income must be estimated for a town that can be divided into three districts. The relevant information is shown in the table. If a 95% confidence interval for the population mean extending $500 on each side of ...A college has 3,200 undergraduate students and 800 graduate students. Researchers are interested in the amount of money spent in a year on textbooks by these students. Initially, simple random samples of 30 undergraduate ...Refer to the data of Exercise 17.28. If 40 pages are to be sampled, determine how many sampled pages would be technical under each of the following schemes. In exercise a. Proportional allocation b. Optimum allocation, ...
Post your question