The following table contains the number of complaints received in a department store for the first 6 months of last year:

Month	Complaints
January	36
February	45
March	81
April	90
May	108
June	144

1. If a three month moving average is used to smooth this series, what would be the second calculated value?

Select one:

a.36

b.40.5

c.2.54

d.72

2. If a three month moving average is used to smooth this series, what would be the last calculated value?

Select one:

a.72

b.93

c.114

d. 126

3. If this series is smoothed using exponential smoothing with a smoothing constant of 1/3, how many values would it have?

Select one:

a.3

b.4

c.5 d.6

4. f this series is smoothed using exponential smoothing with a smoothing constant of 1/3, What would be the first value?

Select one:

a.36

b.39

c.42

d.45