1. **State the problem:** We have two data sets representing the number of pies sold on Thanksgiving and the Fourth of July over 7 years. We need to find the mean and range for each. 2. **Formulas:** - Mean (average) is calculated as $$\text{Mean} = \frac{\text{Sum of all values}}{\text{Number of values}}$$ - Range is calculated as $$\text{Range} = \text{Maximum value} - \text{Minimum value}$$ 3. **Thanksgiving data:** 100, 80, 150, 90, 100, 120, 60 - Sum: $$100 + 80 + 150 + 90 + 100 + 120 + 60 = 700$$ - Number of values: 7 - Mean: $$\frac{700}{7} = 100$$ - Maximum value: 150 - Minimum value: 60 - Range: $$150 - 60 = 90$$ 4. **Fourth of July data:** 50, 95, 40, 120, 60, 100, 25 - Sum: $$50 + 95 + 40 + 120 + 60 + 100 + 25 = 490$$ - Number of values: 7 - Mean: $$\frac{490}{7} = 70$$ - Maximum value: 120 - Minimum value: 25 - Range: $$120 - 25 = 95$$ 5. **Final answers:** - Thanksgiving mean = 100, range = 90 - Fourth of July mean = 70, range = 95 These calculations help understand the average sales and variability in sales for each holiday.