a)
Expected Return on Asset J in State = Probability * Return on Asset J
= 0.25 * 0.05 + 0.38 * 0.05 + 0.23 * 0.05 + 0.14 * 0.05
= 0.0125 + 0.019 +0.0115 + 0.007 = 0.05 or 5%
Expected Return on Asset K in State = Probability * Return on Asset K
= 0.25 * 0.22 + 0.38 * 0.12 + 0.23 * 0.04 + 0.14 *(- 0.07)
= 0.055 + 0.0456+ 0.0092 -0.0098 = 0.100 or 10%
Expected Return on Asset L in State = Probability * Return on Asset L
= 0.25 * 0.25 + 0.38 * 0.23 + 0.23 * 0.06 + 0.14 *(- 0.19)
= 0.0625 + 0.0874 + 0.0138 -0.0266 = 0.1371 or 13.71%
b)Variance and SD of each asset
Asset J
Calculation of variance
State of Economy | P= probability | Return on J in State (a) | Mean (b) | c = (a-b) | d =(a-b)2 | e = P* d |
Boom | 0.25 | 0.05 | 0.05 | 0 | 0 | 0 |
Growth | 0.38 | 0.05 | 0.05 | 0 | 0 | 0 |
Stagnant | 0.23 | 0.05 | 0.05 | 0 | 0 | 0 |
Recession | 0.14 | 0.05 | 0.05 | 0 | 0 | 0 |
0 |
Variance = 0
Standard Deviation = Square root of variance = 0
Asset K
Calculation of variance
State of Economy | P= probability | Return on K in State (a) | Mean (b) | c = (a-b) | d =(a-b)2 | e = P* d |
Boom | 0.25 | 0.22 | 0.1 | 0.12 | 0.0144 | 0.0036 |
Growth | 0.38 | 0.12 | 0.1 | 0.02 | 0.0004 | 0.000152 |
Stagnant | 0.23 | 0.04 | 0.1 | -0.06 | 0.0036 | 0.000828 |
Recession | 0.14 | -0.07 | 0.1 | -0.17 | 0.0289 | 0.004046 |
0.008626 |
Variance = 0.008626 or 0.86%
Standard Deviation = Square root of variance = 0.09288 or 9.29 %
Asset L
Calculation of variance
State of Economy | P= probability | Return on L in State (a) | Mean (b) | c = (a-b) | d =(a-b)2 | e = P* d |
Boom | 0.25 | 0.25 | 0.1371 | 0.1129 | 0.012746 | 0.003187 |
Growth | 0.38 | 0.23 | 0.1371 | 0.0929 | 0.00863 | 0.00328 |
Stagnant | 0.23 | 0.06 | 0.1371 | -0.0771 | 0.005944 | 0.001367 |
Recession | 0.14 | -0.19 | 0.1371 | -0.3271 | 0.106994 | 0.014979 |
0.022813 |
Variance = 0.022813 or 2.28%
Standard Deviation =Square root of variance = 0.1510 or 15.10%
c)Expected return of a portfolio is
= Asset J 8% Asset K 46% and Asset L 46%
= 5% * 8% + 10% * 46% + 13.71% * 46% = 0.004 + 0.046 + 0.063066 = 0.113066 or 11.31 %
d) Portfolio Variance and Standard Deviation
The portfolio’s return in each state of the economy with the allocation of assets at 8% in J, 46% in K, and 46% in L.
Expected Return Portfolio in Boom= 0.08 * 0.05 + 0.46 * 0.22 + 0.46 * 0.25
= 0.004 +0.1012 +0.115 =0.2202 or 22.02%
Expected Return Portfolio in Growth = 0.08 * 0.05 +0.46* 0.12 + 0.46 * 0.23
= 0.004 +0.0552+0.1058 = 0.165 or 16.5 %
Expected Return Portfolio in Stagnant = 0.08 * 0.05 + 0.46 *0.04 + 0.46 * 0.06
= 0.004 + 0.0184 + 0.0276 =0.0500 or 5%
Expected Return Portfolio in Recession = 0.08* 0.05 + 0.46 * (-0.07) + 0.46 *(-0.19)
= 0.004 - 0.0322 -0.0874 = -0.1156 or - 11.56%
Calculation of Variance of portfolio
State of Economy | P= probability | Return of Portfolio (a) | Mean (b) | c = (a-b) | d =(a-b)2 | e = P* d |
Boom | 0.25 | 0.2202 | 0.1131 | 0.1071 | 0.01147 | 0.002868 |
Growth | 0.38 | 0.165 | 0.1131 | 0.0519 | 0.002694 | 0.001024 |
Stagnant | 0.23 | 0.05 | 0.1131 | -0.0631 | 0.003982 | 0.000916 |
Recession | 0.14 | -0.1156 | 0.1131 | -0.2287 | 0.052304 | 0.007323 |
0.012129 |
Variance = 0.012129 or 1.213%
Standard Deviation =Square root of variance = 0.11013 or 11.01 %
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