6.1. Assume we have count data for two groups, shown below. Group 1: 6 7 7 10 6 6 8 2 6 5 Group 2: 5 12 7 6 5 9 6 10 5 7

Calculate the following: (a) The sum of the counts for each group. (b) The natural log of these sums. (c) The difference between the natural log of these sums. (d) The natural log of the ratio of these sums. (e) The exponent of the answer to (c) above. (f) The ratio of the mean for group 1 relative to the mean for group 2. (g) How do (e) and (f) compare? (h) The answer to (e) above is an IRR. Convert this to a percent change. How would you interpret this value?