Copyright 2010 Pearson Addison-Wesley. All rights reserved. 货币金融学 (ECONOMICS OF MONEY www.federalreserve.gov/releases/H15/data.htm.Copyright 2010 Pearson Addison-Wesley. All rights reserved. 1- 11 Interest rates are important on a number of levels. So it is important to explain fluctuations in interest rates. Because different interest rates have a tendency to move in unison, economists frequently lump interest rates together and refer to “the” interest rate. In Chapter 2 we study the role of bo