Dietary fiber is the edible parts of plants or analogous carbohydrates that are resistant to digestion and absorption in the human small intestine, with complete or partial fermentation in the large intestine. Dietary fiber includes polysaccharides, oligosaccharides, lignin, and associated plant substances.
The theoretical rate of return attributed to an investment with zero risk. The risk-free rate represents the interest on an investor's money that he or she would expect from an absolutely risk-free investment over a specified period of time. Next Up.
A ratio developed by Nobel laureate William F. Sharpe to measure risk-adjusted performance. The Sharpe ratio is calculated by subtracting the risk-free rate-such as that of the 10-year U.S. Treasury bond-from the rate of return for a portfolio and dividing the result by the standard deviation of the portfolio returns.he Sharpe ratio is calculated by subtracting the risk-free rate-such as that of the 10-year U.S. Treasury bond-from the rate of return for a portfolio and dividing the result by the standard deviation of the portfolio returns.