Valid 8006 Dumps shared by ExamDiscuss.com for Helping Passing 8006 Exam! ExamDiscuss.com now offer the newest 8006 exam dumps, the ExamDiscuss.com 8006 exam questions have been updated and answers have been corrected get the newest ExamDiscuss.com 8006 dumps with Test Engine here:
A and B are two stocks with normally distributed returns. The returns for stock A have a mean of 5% and a standard deviation of 20%. Stock B has a mean of 3% and standard deviation of 5%. Their correlation is -0.6. What is the mean and volatility of a portfolio which holds stocks A and B in the ratio 6:4?
Correct Answer: C
Explanation The mean can be calculated quite easily as a weighted average, and in this case it is 0.6*5% + 0.4*3% = 4.2%. The variance can be calculated with the formula for portfolio variance as = (0.6^2)*(20%^2) + (0.4^2)*(5%^2) + 2*(-0.6)*0.6*0.4*20%*5%=0.01192. Therefore the volatility of this portfolio is SQRT(0.01192)=10.92%