You are a financial manager and have observed the following returns on Kam Steel Corporation stock over the past ten years: 7%, −12%, 11%, -38%, 14%, 22%, -26%, 18%, 20%, and 23%. Based on the given information, please answer questions a and b.
What was the arithmetic average return on Kam Steel Corporation stock over this 10-year period?
What was the variance of Kam Steel Corporation stock's returns over this period? The standard deviation
Variance is the sum of square of deviation from the mean
Standard Deviation is the square root of variance
Mean is the sum of observations divide by number of observations
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