Suppose that you are using the naïve forecasting method with trend to forecast sales. If sales have been declining by 20% per week, and this week's sales amounted to $200, what would your forecast be for next week?
a) $200
b) $ 40
c) $240
d. $180
e) $160
Answer: e) $160
Solution: 200 x .20 = 40; 200 - 40 = 160