Suppose we have the following returns for large-company stocks and Treasury bills over a six year period:

YearLarge CompanyUS Treasury Bill

1 3.99 4.59

2 14.16 4.94

3 19.25 3.86

4 14.43 6.99

5 31.92 5.30

6 37.49 6.20

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Calculate the standard deviation of the returns for large-company stocks and T-bills over this period.

Standard deviation

-Large company stocks= %

-T-bills= %