Basic calculations
Let .......... X = Returns of large company stocks
................Y = Returns of T-Bills
Year | X | Y | Dx | Dy | Dx2 | Dy2 |
1 | 3.99 | 4.59 | -0.76667 | -0.72333 | 0.587783 | 0.523211 |
2 | 14.16 | 4.94 | 9.40333 | -0.37333 | 88.42262 | 0.139378 |
3 | 19.25 | 3.86 | 14.49333 | -1.45333 | 210.0566 | 2.112177 |
4 | -14.43 | 6.99 | -19.1867 | 1.676667 | 368.1283 | 2.811212 |
5 | -31.92 | 5.3 | -36.6767 | -0.01333 | 1345.178 | 0.000178 |
6 | 37.49 | 6.2 | 32.73333 | 0.886667 | 1071.471 | 0.786178 |
Total | 28.54 | 31.88 | Variance | 3083.844 | 6.372333 | |
Average | 4.76 | 5.31 | SD | 55.53 | 2.52 |
Question - (a)
Arithmetic average = Sum of the values / number of values
Large Company stocks = 28.54 / 6 = 4.75667 .............. = 4.76 %
T - Bills = 31.88 / 6 = 5.31333.........................................= 5.31 %
Question - (b)
For computing the standard deviations ......... we need Dx and Dy
Dx = X - Average of X ......... Note that, to reduce the error of intermediate rounding, we subtract 4.75667 instead of 4.76.
Dy = Y - 5.31333
Large company stock ............Variance = Σ Dx2 = 3038.84 and Standard deviation = √3038.84 = 55.53 %
T-Bill ......................................Variance = Σ Dy2 = 6.372333 and Standard deviation = √6.372333 = 2.52 %
Question - (c)
Observed Risk premium = X - Y
Z = X - Y
Year | Z | Dz | Dz2 |
1 | -0.6 | -0.04333 | 0.001877 |
2 | 9.22 | 9.77667 | 95.58328 |
3 | 15.39 | 15.94667 | 254.2963 |
4 | -21.42 | -20.8633 | 435.2785 |
5 | -37.22 | -36.6633 | 1344.2 |
6 | 31.29 | 31.84667 | 1014.21 |
Total | -3.34 | Variance | 3143.57 |
Average | -0.56 | SD | 56.07 |
Arithmetic average of risk premium = - 0.56
Standard deviation = 56.07
Consider the following rates of return: Year Large-Company Stocks US Treasury Bills 1 3.99 % 4.59...
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Need help with b1 and b2 please explain with details.Thx
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