Question

A company has the following returns over the past 30 months:

Month Ret.(%) Month Ret.(%) Month Ret.(%)

1) 3 11 -3 21 -1

2) -16 12 -2 22 -24

3) 31 13 -8 23 -14

4) 33 14 2 24 -19

5) -23 15 35 25 -19

6) -17 16 11 26 33

7) 8 17 -20 27 -18

8) -19 18 15 28 23

9) -13 19 -12 29 6

10 -17 20 17 30 5

What is the stock’s standard deviation?

Answer #1

The standard deviation is 18.55%

This is computed using excel STDEV function.

The data is eneterd in cells D1 to D30

WORKINGS

____________________________________________
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____________________________________________
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____________________________________________
If the editors...

The results of a sample of 372 subscribers
toWiredmagazine shows the time spent using the Internet
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7
21
23
24
18
16
2
19
11
6
3
13
17
9
5
12
13
17
4
14
15
25
12
24
22
14
14
20
15
11
26
17
21
11
4
13
16
14
13
14
25
23
9
15...

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32
8
14
20
28
19
37
31
16
16
16
29
11
34
31
18
22
17
27
16
24
49
25
18
25
21
15
16
20
11
21
29
14
25
10
15
8
12
12
19
21
28
27
26
12
24
18
19
24
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17
23
21
24
2
25
21
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