For problems 17-23, use the exponential_smoothing_data.csv dataset to answer the questions. The dataset provided is monthly data.

Simple Exponential Smoothing

1. What is the total error when alpha = 0.4?
2. If alpha = 0.4, is the next forecast more heavily weighted toward the previous observed data or the previous smoothed data?

Holts Exponential Smoothing

3. What is the total error when alpha = 0.4 and gamma = 0.4?
4. What is Holts forecast when m = 1?

Winters Exponential Smoothing

5. What is the total error when alpha = 0.4, gamma = 0.4 and beta = 0.6?
6. What is Winters forecast when m=1? (one period into the future)
7. What is Winters forecast when m = 2? (two periods into the future)

   Month	Year	Sales
   JAN	2014	372012
   FEB	2014	377748
   MAR	2014	382915
   APR	2014	387140
   MAY	2014	388205
   JUN	2014	390346
   JUL	2014	391052
   AUG	2014	394458
   SEP	2014	394025
   OCT	2014	396158
   NOV	2014	398452
   DEC	2014	399105