# Rate of return, standard devia

Rate of return, standard deviation, and coefficient of variation You have heard about the great returns that some private equity funds generate and have decided to evaluate BlackRock, Inc. (BLK) and KKR & Co. Inc. (KKR). The table below provides 13 months of historical prices for each company. Assume that neither company paid a dividend during this period. a. Calculate the monthly rate of return for each stock.

b. Calculate the average monthly return for each stock.

c. Calculate the standard deviation of monthly returns for each stock.

d. Based on parts b and c, determine the coefficient of variation for each stock.

# Rate of return, standard devia

Rate of return, standard deviation, and coefficient of variation Jelena is searching for an IT stock to include in her current stock portfolio. She is interested in Perin Technologies; she believes that Perin is an innovative market player. However, Jelena realizes that any time you consider a technology stock, risk is a major concern. The rule she follows is to include only securities with a coefficient of variation of returns below 0.85. Jelena has obtained the following price information for Perin stock. Perin has not paid any dividends during these four years following a high growth strategy. a. Calculate the rate of return for each year.

b. Calculate the average return over time.

c. Calculate the standard deviation over the past four years.

d. Based on parts b and c, determine the coefficient of variation for the security.

e. Given the calculation in part d, what should be Jelena’s decision regarding the inclusion of Perin stock in her portfolio?