Develop a four-month moving average forecast for Wallace Garden Supply and compute the MAD. A three-month moving average forecast was developed in the attached table.

Question 1

The four-month moving average forecast for Wallace Garden Supply is ___________. (Please round it to an integer and include no units.)

A. 17

B. 18

C. 19

D. 20

Question 2

The Mean Absolute Deviation (MAD) for the above forecast is _____________. (Please round it to two decimal points.)

MONTH January February March April May June ACTUAL SHED SALES 10 12 13 16 19 23 26 30 28 18 16 14 3-MONTH MOVING AVERAGE August September October November December January (10+12+13)/3 = 11.67 (12 + 13 + 16)/3 = 13.67 (13 + 16 + 19)/3= 16.00 (16 + 1 9 + 23)/3 = 1 9.33 (19 + 23 + 26)/3 = 22.67 (23 + 26 + 30)/3 = 26.33 (26 + 30 + 28)/3 = 28.00 (30 + 28 + 18)/3 = 25.33 (28 + 18 + 16)/3 = 20.67 (18 + 16 + 14)/3= 16.00