. services that government workers provide. It does not includeCHAPTER 2 The Data of Macroeconomics | 25FYINewcomers to macroeconomics are sometimesconfused by how macroeconomists use familiarwords. inflation on interest rates, and the influence of tradepolicy on the trade balance and exchange rates. Macroeconomics is as diverse asthe economy.Although economists use models to address all these. tasks,economists uses different models to explain different economic phenomena. Stu-dents of macroeconomics, therefore, must keep in mind that there is no single“correct’’ model useful for...