1. What do you see in these scatter plots?
Mean January Air Temperatures for 30 New Zealand Locations 20 19 18
Temperature (°C) 17 16 15 14 35 40 45
Latitude (°S)   

2. What do you see in these scatter plots?10 20 30 40
GDP per capita (thousands of dollars) 50 60 70 80
Internet Users (%)
% of population who are Internet Users vs GDP per capita for 202 Countries

3. What do you see in these scatter plots?
Year
1990
1980
1970
1960
1950
1940
1930 30 28 26 24 22 20
Age
Average Age New Zealanders are First Married

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

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

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

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

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

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

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

11. Life Expectancy Example
Life Expectancy and Availability of Doctors for a Sample of 40 Countries 80 70
Life Expectancy 60 50
10000
20000
30000
40000
People per Doctor

12. Life Expectancy Example
Life Expectancy and Availability of Televisions for a Sample of 40 Countries 80 70
Life Expectancy 60 50
100
200
300
400
500
600
People per Television