1. A stock has the following returns over the past 5 years: 18%, 37%, 10%, -12%, 22%.

The sample standard deviation is:

a.		18.00%
		b. 0%
		c. 38.07%
		d. 36.00%

2.

A sample of asset returns has 7 observations (N=7). Percent expressions are used to calculate the sum of the squared differences from the mean equal to 9,780. Dividing this number by N-1, 9,780/6 = 1,630. Based on this information, the variance of returns is:

9,700

40.37

0.4037

cannot determine from information provide