Final answer:
The average weight change per week for the overweight dog on the special diet is -0.64 oz/week.
Step-by-step explanation:
To determine the average weight change per week for the overweight dog, we need to calculate the mean of the weight changes in the table. We add up all the weight changes and divide by the number of weeks. Let's do the calculation:
Average weight change per week = (-1.5 + 2.2 - 0.8 - 1.6 - 0.6) / 5 = -0.64 oz/week
Therefore, on average, the dog loses 0.64 ounces per week on the special diet.