A. Using the nave method (most recent value) as the forecast for the next week, compute Mean absolute error. If required, round your answer to one decimal place.

B. Using the nave method (most recent value) as the forecast for the next week, compute MSE. If required, round your answer to one decimal place.

C. Using the exponential smoothing with alpha=0.5, and assuming that forecast for period 1=20, compute Mean absolute error. If required, round your answer to one decimal place.

D. Using the exponential smoothing with alpha=0.5, and assuming that forecast for period 1=20, compute the forecast for period 7. If required, round your answer to one decimal place.

E. Which forecasting method is better to forecast for period 7 based on Mean absolute error? Naive or exponential smoothing?

Consider the following time series data. Week 1 2 3 4. 5 6 Value 20 14 15 10 17 16