I don't understand how to get the answer to this question. I have posted the solution given to me by my textbook as well as the question.

4 Measuring risk and rate return) Given the following holding-period returns, calculate the average return for the market. Month Champ Inc. Market 1.8% 1 2.8% 2 3.2% 1.2% 3 9.0% 11.0% 4 -2.6% -1.0% 5 -2.9% -4.7% 6 12.0% 8.0% 5.80% 11.01% 3.58% 0 2.72% FEEDBACK 0/1 (0.0%) Correct Answer: 2.72% The expected return is merely the average of the recorded returns. Month Champ Inc. Market Champ Variance Market Variance 1 2.80% 1.80% 6.13611E-05 8.40278E-05 2 3.20% 1.20% 1.46944E-05 0.000230028 3 9.00% 11.00% 0.00293028 0.006861361 4 -2.60% -1.00% 0.003823361 0.001381361 5 -2.90% -4.70% 0.004203361 0.005500694 6 12.00% 8.00% 0.007084028 0.002791361 Averagae 3.53% 2.72% Standard Deviation 6.02% 5.80% Found in the following section(s) of the text: 8.2: Risk