Question

Find variance of the following stocks A,B and C: Stock A B C 1 3 19...

Find variance of the following stocks A,B and C:

Stock A B C
1 3 19 -2
2 5 17 4
3 7 15 0
4 9 13 8
5 11 11 12
6 13 9 14
8 15 7 -8
9 17 5 16
10 19 3 20

Homework Answers

Answer #1

Statement showing variance

A B C
Year x (x-X) (x-X)^2 y (y-Y) (y-Y)^2 z (z-Z) (z-Z)^2
1 3 -8 64 19 8 64 -2 -9.11 82.9921
2 5 -6 36 17 6 36 4 -3.11 9.6721
3 7 -4 16 15 4 16 0 -7.11 50.5521
4 9 -2 4 13 2 4 8 0.89 0.7921
5 11 0 0 11 0 0 12 4.89 23.9121
6 13 2 4 9 -2 4 14 6.89 47.4721
8 15 4 16 7 -4 16 -8 -15.11 228.3121
9 17 6 36 5 -6 36 16 8.89 79.0321
10 19 8 64 3 -8 64 20 12.89 166.1521
99 240 99 240 64 688.8889
(/) n 9 9 9 9 9 9
Expected return(X,Y,Z) 11.000 11.000 7.111
Variance 26.667 26.667 76.543
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