Expected or Average return = Sum of returns/no. of
periods
Standard deviation = √ (∑ (Return- Expected return)^2)/(no. of
periods - 1))
Stock A
R R- ER (ER = 0.062)
(R-AR)^2
1 0.11 0.0480 0.002304
2 0.04 -0.0220 0.000484
3 0.12 0.0580 0.003364
4 -0.04 -0.1020 0.010404
5 0.08 0.0180 0.000324
Total 0.31
0.01688
Expected Return = 0.31/5 = 0.0620
Standard deviation = √(0.01688/(5-1))
0.06496152708
Stock B
R R- ER (ER = 0.032)
(R-AR)^2
1 0.07 0.0380 0.001444
2 0.04 0.0080 0.000064
3 0.06 0.0280 0.000784
4 0.03 -0.0020 0.000004
5 -0.04 -0.0720 0.005184
Total 0.16
0.00748
Expected Return = 0.16/5 = 0.0320
Standard deviation = √(0.00748/(5-1))
0.04324349662
Expected return of A 0.062
Expected return of B 0.032
Standard deviation of A 0.0650
Standard deviation of B 0.0432
Correlation 0.43
Weight of A 60%
Weight of B 40%
Expected return of Portfolio= (weight of A * Expected return of A)
+ (Weight of B * Expected retun of B)
(60%*0.062)+(40%*0.032)
0.0500
So Expected Return of Portfolio is 0.0500
Standard deviation (σp) formula=√ ( (wA * σA ) ^2 + (wB * σB ) ^2
+( 2 * wA* wS*Cov AB )
√((60%*0.06496152708)^2+(40%*0.04324349662)^2+(2*60%*40%*0.06496152708*0.04324349662*0.43))^0.5
0.0490
So standard deviation of portfolio is 0.0490
please help Stocks A and B have the following returns Stock B Stock A 0.1 007...
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