Question: I determined the regression equation for the data table below is : y = -0.1126x + 239.47 Using this formula and excel, I estimated the

I determined the regression equation for the data table below is : y = -0.1126x + 239.47

Using this formula and excel, I estimated the expected birthrates for the following years: 1978, 2012, and 2050.

1978 = 16.74

2012=12.9188

2050= 8.64

1)Are my forecasts accurate?

2)The 1978 actual result was 15. How much was the residue for this year?

3) How much faith should I put into the 2012 and 2050 predictions?

The table below shows the number of live births per 1000 women aged 15-44 years in the United States, starting in 1965 (National Center for Health Statistics)

Year	Birthrate
1965	19.4
1970	18.4
1975	14.8
1980	15.9
1985	15.6
1990	16.4
1995	14.8
2000	14.4
2005	14.0
2010	13.0

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