+4 Describe and explore the trends in smoking over 1991 – 1013 as detailed in table 2.1. include in your exploration what is predicted to happen in 2016 and when smoking might be predicted to be non-existent
-Graph the data in Table 2.1 using two scatterplots; display both on the same graph.
Describe each relationship using an equation for a straight line. (excel may be used but equations must be confirmed using hand calculations)
Compare the two relationship using the components of the equatin
Make predictions about what will happen in 2016 and beyond
Discuss the strength and usefulness of the two straight line equations used to describe the two relationships.
| year | Daily Smoker | Never Smoker |
| 1991 | 24.3 | 49 |
| 1993 | 25 | 49.1 |
| 1995 | 23.8 | 52.6 |
| 1998 | 21.8 | 49.2 |
| 2001 | 19.4 | 50.6 |
| 2004 | 17.5 | 52.9 |
| 2007 | 16.6 | 55.4 |
| 2010 | 15.1 | 57.8 |
| 2013 | 12.8 | 60.1 |
