real estate investment trust; REIT: A company, usually traded publicly, that raises money from shareholders and invests that money in a portfolio of real estate properties. REITs are modeled after mutual funds, although the tax treatment of REIT income is different.

regression analysis : A statistical technique used to find the mathematical relationship between a dependent variable (such as a company’s stock price) and one or more independent variables (such as GDP, income growth, or inflation). Regression analysis is used to predict future values of the dependent variable based on changes in the independent variables.

retracement: A price movement in the opposite direction of the previous trend. When a price has gone too far and traders deem the security overbought or oversold, the price may stop rising or falling and move in the opposite direction for a period of time.

Roth IRA: A type of IRA in which contributions to the account are not tax-deductible, but qualified withdrawals are completely exempt from federal income tax.