Macroeconomics deal with big picture economic policy. Instead of focusing on small individual markets it deals with the scale of a national or global economy. Understanding them is paramount to gauge the health and growth of an economy. Many models are formed around macroeconomics to explain the correlation between many various factors. By studying these factors it becomes easier to understand the benefits and detriments of long term and short term growth in national income. This data is indispensable for creating economic policies, which will directly effect the smaller individual markets. Macroeconomics show the general health of large economic systems.