1. Malcar Autoparts Company has started producing replacement control microcomputers for automobiles. Sales data since 2000 are as follows:

	Year	Sales
1	2000	240,000
2	2001	218,000
3	2002	405,000
4	2003	587,000
5	2004	795,000
6	2005	762,000
7	2006	998,000
8	2007	1,217,000
9	2008	1,570.000
10	2009	1,947,000
11	2010	2,711,000
12	2011	3,104,000
13	2012	2,918,000
14	2013	4,606,000
15	2014	5,216,000
16	2015	5,010,000
	Total

a) Graph these data and indicate whether they appear to have

a linear trend. Discuss this.

b) Develop a simple linear regression model with time as the independent variable. Using this regression model, describe the trend and the strength of the linear trend over the 16 years. Is the trend line statistically significant? Plot the trend line against the actual data.

c) Compute the MAD for this model.

d) Provide the Malcar Autoparts Company an estimate of its expected sales for the next 5 years.