First use 2-month and then 3-month moving average method to

HP uses X63 chip in their computers and prices for these chips for last 12 months are:

Month	Jan	Feb	Mar	Apr	May	Jun	July	Aug	Sep	Oct	Nov	Dec
Price ($)	1.80	1.67	1.70	1.85	1.90	1.87	1.80	1.83	1.70	1.65	1.70	1.75

Forecast next month (i.e. next Jan) sales price using each of the following:

First use 2-month and then 3-month moving average method to forecast sales price. Using MAD approach, which average is better?
If the initial Jan forecasts were also $1.80; in an exponential smoothing method, first use a = 0.1 and then a = 0.5; Using MSE approach, which value of a is better to predict sales price?
In practice, both MAD and MSE can be used to find forecast accuracy giving the same decisions. Why would you choose one over the other? ( Can you explain how to do it by solving, not excel)

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First use 2-month and then 3-month moving average method to : hp uses x63 chip in their computers and prices for these chips for last 12 months

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