Security A has an expected rate of return of 6 percent, a standard deviation of expected returns

Question:

Security A has an expected rate of return of 6 percent, a standard deviation of expected returns of 30 percent, a correlation coefficient with the market of - 0.25, and a beta coefficient of 0.5. Security B has an expected return of 11 percent, a standard deviation of returns of 10 percent, a correlation with the market of 0.75, and a beta coefficient of 0.5. Which security is more risky? Why?

Beta Coefficient
Beta coefficient is a measure of sensitivity of a company's stock price to movement in the broad market index. It is an indicator of a stock's systematic risk which is the undiversifiable risk inherent in the whole financial system. Beta coefficient... Expected Return
The expected return is the profit or loss an investor anticipates on an investment that has known or anticipated rates of return (RoR). It is calculated by multiplying potential outcomes by the chances of them occurring and then totaling these...