1. **State the problem:** Find the mean (average) of all factors of 24. 2. **List all factors of 24:** Factors are numbers that divide 24 without remainder. They are 1, 2, 3, 4, 6, 8, 12, 24. 3. **Calculate the sum of the factors:** $$1 + 2 + 3 + 4 + 6 + 8 + 12 + 24 = 60$$ 4. **Count the number of factors:** There are 8 factors. 5. **Calculate the mean:** Mean = $$\frac{60}{8} = 7.5$$ **Final answer:** The mean of all factors of 24 is $7.5$.