Learn how to use the Fear and Greed Index, a tool used to measure investor sentiment and market volatility, with our ...

Investors use an index to track the performance of a set of assets. The selection of those assets and how they are tracked varies with the index (S&P500, Dow Jones, etc.). Learn more.

What is the Dollar Index? The Dollar Index is a measure of the value of the U.S. dollar compared to a grouping of foreign currencies. Click to read more about the USDX.

The heat index is measured using a multiple regression analysis that uses the actual temperature and humidity to produce a number that is more representative of how hot it feels outside.

An index annuity is an annuity whose rate of return is based on a stock market index, such as the S&P 500. Unlike most variable annuities, an indexed annuity sets limits on your potential gains ...

The Herfindahl-Hirschman Index is a way to determine just how competitive an industry may be. Read on to learn more about this tool.

Because it has a large number of young, fast-growing companies, the Nasdaq index is generally considered to be an excellent barometer of the overall performance of the tech industry.

W. Erwin Diewert, Index Number Theory Using Differences Rather than Ratios, The American Journal of Economics and Sociology, Vol. 64, No. 1, Special Invited Issue: Celebrating Irving Fisher: The ...

An adjustment index is a formula or numerical value that is used to modify or improve a data set.

If you look at the side of your vehicle's tires, you'll notice a line of numbers. One of these number sets is the tire load index. Here's what that means.