1. What do you see in these scatter plots? 454035 20 19 18 17 16 15 14 Latitude (°S) Mean January Air Temperatures for 30 New Zealand Locations Temperature (°C)

2. What do you see in these scatter plots?

4. What to look for in scatter plots 1.Trend Linear or non-linear?

5. 1.Trend Positive or negative association? What to look for in scatter plots

6. 2.Scatter Strong or weak relationship? What to look for in scatter plots

7. 2.Scatter Constant or non-constant scatter? What to look for in scatter plots

8. 3.Anything unusual Outlier What to look for in scatter plots

9. 3.Anything unusual Groupings What to look for in scatter plots

10. Rank relationships: weakest (1) to strongest (4) 4 2 1 3

11. Life Expectancy Example 400003000020000100000 80 70 60 50 People per Doctor Life Expectancy Life Expectancy and Availability of Doctors for a Sample of 40 Countries

12. Life Expectancy and Availability of Televisions for a Sample of 40 Countries 6005004003002001000 People per Television Life Expectancy 80 70 60 50 Life Expectancy Example