For loans at insured commercial banks, the Federal Financial Institutions Examination Council has reported the percentage of various kinds of loans that were at least 30 days in delinquency during each of the years shown in the table. The data are also listed in file XR17064. For y = percent of all insured commercial bank loans overdue, x1 = percent of consumer credit cards overdue, and x2 = percent of residential loans overdue, fit a first-order polynomial model to the data and interpret the partial regression coefficients and the R2 value. Add an interaction term to the model. To what extent has the addition of the interaction term improved the explanatory power of the model?
Answer to relevant QuestionsThe production engineer for the manufacturing plant in Exercise 17.61 has just included another variable: the worker’s gender, coded as 1 = female and 0 5 male. File XR17065 contains the expanded set of data. With y = ...A travel research firm has reported average occupancy and room rates for hotels in 26 U.S. hotel markets. The data are also in file XR17007. For y = average room rate (dollars) and x = average occupancy rate (percent), fit a ...Ted Thorndike has been asked to pay another visit to the statistics class taught by his friend, Mary Stuart. One of the university’s track athletes has an excellent chance to make the Olympics in the 1500 meters, known as ...The following data describe the monthly volume for an urban courier service. Data are in thousands of pieces handled. a. Construct a graph of the time series. Does the overall trend appear to be upward or downward? b. ...A major amusement park has the following number of visitors each quarter from 2005 through 2009: a. Construct the four-quarter centered moving average for these data and determine the percentages of the moving average for ...
Post your question