The Standard Deviation Variance And Coefficient Of Variation Of Th The assignment requires calculating the standard deviation, variance, and coefficient of variation of daily returns for a specified portfolio. Specifically, these metrics should be computed for the overall portfolio and separately over an eight-week period ending August 1st. Additionally, an analysis must be conducted comparing the historical and current performance of Staples Inc. and Starbucks Corp., focusing on their relative performance over the past five years, including comparison to the market index. The analysis should encompass a comparative review of key financial ratios across the two stocks, the broader industry, and their performance trends over time. The portfolio includes Safeway (SWY), Spring Nextel (S), Jones Lange LaSalle (JLL), Johnson & Johnson (JNJ), Morgan Stanley (MS), Merck & Co (MRK), Staples Inc. (SPLS), and Starbucks Corp. (SBUX).
Paper For Above instruction The evaluation of risk and performance of investment portfolios is crucial for investors aiming to optimize returns while managing risk. Key statistical tools used in this assessment include the standard deviation, variance, and coefficient of variation. These metrics provide insights into the volatility of asset returns, enabling informed decisions regarding diversification and risk management strategies. Calculation of Standard Deviation, Variance, and Coefficient of Variation The standard deviation quantifies the dispersion of daily returns around their mean, providing a direct measure of volatility. To calculate it, one must first determine the average daily return, then compute the squared deviations of each daily return from this mean, average these squared deviations, and take the square root of this average (Fama & French, 2004). Variance, the square of the standard deviation, offers a similar measure in squared units, further emphasizing the extent of return dispersion. The coefficient of variation (CV), calculated as the ratio of the standard deviation to the mean return, standardizes volatility relative to return level, facilitating comparisons across assets with different return profiles (Elton & Gruber, 1995). These calculations should be performed on the daily return data for the constituent assets of the portfolio, both overall and within the specified eight-week window to observe short-term volatility. Portfolio and Period Analysis Assessing the portfolio's risk involves aggregating individual asset volatilities considering their weights in the portfolio and the covariances among asset returns. The overall portfolio variance is computed using the