A sector is an area of the economy in which businesses share the same or a related product or service. Read how to use sectors to increase investing gains.| Investopedia
Purchasing power is the value of a currency in terms of the goods or services one unit of it can buy. Discover how purchasing power impacts investors.| Investopedia
The Consumer Price Index measures change over time in the prices paid by consumers for a representative basket of goods and services.| Investopedia