1.- A consumer goods company keeps track of the monthly demand for one of its emblematic products for a period of one year. Such information is presented in the column labeled Demand in the image below. It is required to use the simple exponential smoothing method considering three values for the alpha smoothing parameter: 0.1; 0.5 and 0.9. Obtain the forecast for period 13 (January of the following year) and evaluate the adjustment of the method for each of the proposed alpha values 2.- Calculate the MAD and PEMA for each smoothing

MES	PERIODO	DEMANDA
ENE	1	2.000
FEB	2	1.350
MAR	3	1.950
ABR	4	1.975
MAY	5	3.100
JUN	6	1.750
JUL	7	1.550
AGO	8	1.300
SEP	9	2.200
OCT	10	2.770
NOV	11	2.350
DIC	12	2.230
ENE	13