Carbon monoxide (CO) is a colorless, odorless gas that is highly toxic. A major source of CO is motor vehicle emissions. Consider data on average CO emissions (grams per mile) for gasoline passenger cars by production year from 2000 to 2018. Gasoline electric hybrids, but not electric cars, are included in the estimates.

The forecast from the SLR (Simple Linear Regression) method for 2019 is 2.186 Calculate:-

1. Forecast for 2019 using mean method = grams/mile

2. Forecast for 2019 using naive method = grams/mile

3. What is the value of the drift? Give answer to three decimal places as needed.

4. Forecast for 2019 using drift method = grams/mile

Year	CO (grams per mile)
2000	16.028
2001	14.672
2002	12.975
2003	11.866
2004	10.714
2005	9.759
2006	9.116
2007	8.457
2008	7.954
2009	7.48
2010	7.121
2011	6.839
2012	6.228
2013	5.775
2014	5.314
2015	4.898
2016	4.563
2017	4.183
2018	3.941