The S&P 500 and Nohr Corp had the following returns over the past five years

Year S&P 500 Nohr

1. .12 .23
2. .01 -.05
3. .18 .20
4. .09 .12
5. .10 .20

a. What was the mean AND standard deviation of returns (population version) for Nohr for the 5 years?

b. What was the beta of Nohr relative to the S&P 500?

c. What was the geometric mean return for Nohr for the 5 years?