A financial analysis firm conducted a review of investment portfolios for two different groups over a three-year period. The data collected is summarized below:
Year | Group 1 Investment Returns (%) | Group 2 Investment Returns (%) |
---|---|---|
Year 1 | 8 | 10 |
Year 2 | 12 | 7 |
Year 3 | 5 | 15 |
To determine the overall performance for each group over the three years, the average return for each group needs to be calculated. Which of the following comparisons about the average returns of the two groups is correct?