What is an Analyst Ratio? What is Carry?

What is Beta (and How to Use It)?

Beta is a statistical measure of the impact that stock market movements have historically had on a stock's price. By comparing the returns of the Standard & Poor's 500 (S&P 500) to a particular stock's returns, a pattern develops that indicates the stock's exposure to stock market risk. This will help you decide whether you want to take on a riskier stock that moves with a higher correlation to the market or a stock that is less susceptible to market fluctuations.
Source: http://www.investorguide.com/igu-article-823-stock-basics-measuring-a-stocks-risk.html