The Excel file Closing Stock Prices provides data for four stocks and the Dow Jones Industrial Average over a one-month period.

a. Develop a spreadsheet for forecasting each of the stock prices and the DJIA using a simple two-period and three-period moving average.

b. Compute MAD, MSE, and MAPE and determine whether two or three moving average periods is better.

See data below. Please be sure to include excel step by steps

Date	IBM	INTC	CSCO	GE	DJ Industrials Index
9/3/2010	$127.58	$18.43	$21.04	$15.39	10447.93
9/7/2010	$125.95	$18.12	$20.58	$15.44	10340.69
9/8/2010	$126.08	$17.90	$20.64	$15.70	10387.01
9/9/2010	$126.36	$18.00	$20.61	$15.91	10415.24
9/10/2010	$127.99	$17.97	$20.62	$15.98	10462.77
9/13/2010	$129.61	$18.56	$21.26	$16.25	10544.13
9/14/2010	$128.85	$18.74	$21.45	$16.16	10526.49
9/15/2010	$129.43	$18.72	$21.59	$16.34	10572.73
9/16/2010	$129.67	$18.97	$21.93	$16.23	10594.83
9/17/2010	$130.19	$18.81	$21.86	$16.29	10607.85
9/20/2010	$131.79	$18.93	$21.75	$16.55	10753.62
9/21/2010	$131.98	$19.14	$21.64	$16.52	10761.03
9/22/2010	$132.57	$19.01	$21.67	$16.50	10739.31
9/23/2010	$131.67	$18.98	$21.53	$16.14	10662.42
9/24/2010	$134.11	$19.42	$22.09	$16.66	10860.26
9/27/2010	$134.65	$19.24	$22.11	$16.43	10812.04
9/28/2010	$134.89	$19.51	$21.86	$16.44	10858.14
9/29/2010	$135.48	$19.24	$21.87	$16.36	10835.28
9/30/2010	$134.14	$19.20	$21.90	$16.25	10788.05
10/1/2010	$135.64	$19.32	$21.91	$16.36	10829.68