Beta can be estimated as the ration of covariance between the returns of the market and portfolio returns and the variance of the returns of the market Variance is nothing but the square of standard deviation Assume Covariance of returns between the market and portfolio is $0\mathrm{.}0345$ Stndard deviation if market returns is $0\mathrm{.}126$ then USE EXCEL to estimate the beta of the portfolio : Beta Covariance between returns of market & portfolio $/$ Variance of market returns Multiple Choice $0\mathrm{.}501\mathrm{.}252\mathrm{.}17$