[Analyzing the components of personal income] Go to the Web site of the Federal Reserve Bank of St. Louis (FRED) (research.stlouisfed.org/fred2/).
a. Find the values for the most recent quarter for these three variables: (1) Personal Income (PINCOME); (2) Disposable Personal Income (DPI); and (3) Personal Consumption Expenditures (PCEC).
b. Use these values to calculate the difference between personal income and disposable personal income. What does this value represent?