Use trial and error to find a value of the exponential smoothing coefficient alpha that results in a smaller MSE than what you calculated for alpha = 0.2. a. Find a value of alpha for the smallest MSE. alpha =?
b. What type of pattern exists in the data?
c. Develop a three-week moving average for this time series.

Week Time Series Value Forecast
1 18
2 13
3 16
4 11
5 17
6 14