Hi, I need to calculate the time-series average returns and standard deviations to the size premiums across the six regions/countries. To do this I believe I need the monthly returns from each category and then from there can get the average returns and standard deviations. Would the correct formula to calculate February in the developed market category be (-1.27/1.59) - 1 which equals -1.80 ?

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Hi, I need to calculate the time-series average returns and standard deviations to the size premiums across the six regions/countries. To do this I believe I need the monthly returns from each category and then from there can get the average returns and standard deviations. Would the correct formula to calculate February in the developed market category be (-1.27/1.59) - 1 which equals -1.80 ? 

Year Month
1993 1
1993 2
1993 3
1993 4
1993 5
1993 6
1993 7
1993 8
1993 9
1993 10
1993 11
1993 12
Market Risk Premium (Rm - R+)
Global Market
0.31
1.89
6.67
4.3
3.12
-2.11
2.25
4.37
-1.95
1.11
-6.26
4.03
Size Premium Across Regions (SMB, Small-Minus-Big)
Developed Market Emerging Market European Market Japanese Market Asia-Pacific Market Excluding Japan North American Market
0.31
2.01
-1.47
-3.61
0.6
3.76
3.73
-0.37
2.04
0.46
1.59
-1.27
0.35
0.59
4.35
-0.9
-1.54
0.86
1.82
-0.33
1.6
0.23
-1.57
3.08
1.55
4.12
3.34
-2.59
0.71
1.24
3.38
4.26
3.17
2.56
3.28
-0.79
1.43
3.46
0.29
-1.58
-1.1
0.53
1.01
-1.96
0.86
-2.61
-1.67
2.09
0.26
1.07
12.26
-2.64
-4.79
-0.51
0.87
-7.67
-1.54
-0.92
2.72
2.44
1.11
-1.38
-2.97
-5.09
2.41
-6.15
0.9
0.48
2.53
1.94
-1.41
0.91
Transcribed Image Text:Year Month 1993 1 1993 2 1993 3 1993 4 1993 5 1993 6 1993 7 1993 8 1993 9 1993 10 1993 11 1993 12 Market Risk Premium (Rm - R+) Global Market 0.31 1.89 6.67 4.3 3.12 -2.11 2.25 4.37 -1.95 1.11 -6.26 4.03 Size Premium Across Regions (SMB, Small-Minus-Big) Developed Market Emerging Market European Market Japanese Market Asia-Pacific Market Excluding Japan North American Market 0.31 2.01 -1.47 -3.61 0.6 3.76 3.73 -0.37 2.04 0.46 1.59 -1.27 0.35 0.59 4.35 -0.9 -1.54 0.86 1.82 -0.33 1.6 0.23 -1.57 3.08 1.55 4.12 3.34 -2.59 0.71 1.24 3.38 4.26 3.17 2.56 3.28 -0.79 1.43 3.46 0.29 -1.58 -1.1 0.53 1.01 -1.96 0.86 -2.61 -1.67 2.09 0.26 1.07 12.26 -2.64 -4.79 -0.51 0.87 -7.67 -1.54 -0.92 2.72 2.44 1.11 -1.38 -2.97 -5.09 2.41 -6.15 0.9 0.48 2.53 1.94 -1.41 0.91
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Assuming the SMB returns are already calculated as the figures represented in the spreadsheet, is the average returns created by averaging all figures and standard deviation via the '=STDEV.S' forumla? subsequently calculating the risk ratio as return/std dev?

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thank you for the prompt response to my question. Where did you calculate the 0.79 from in this equation 'SMB (developed market) = (0.79 - (-1.27))/1.59 = 1.80'? 

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