What do you see in these scatter plots
- Slides: 12
What do you see in these scatter plots? Mean January Air Temperatures for 30 New Zealand Locations Temperature (°C) 20 19 18 17 16 15 14 35 40 Latitude (°S) 45
What do you see in these scatter plots? % of population who are Internet Users vs GDP per capita for 202 Countries Internet Users (%) 80 70 60 50 40 30 20 10 0 0 10 20 30 40 GDP per capita (thousands of dollars)
What do you see in these scatter plots? Average Age New Zealanders are First Married 30 28 Age 26 24 22 20 1930 1940 1950 1960 1970 1980 1990 Year
What to look for in scatter plots 1. Trend Linear or non-linear?
What to look for in scatter plots 1. Trend Positive or negative association?
What to look for in scatter plots 2. Scatter Strong or weak relationship?
What to look for in scatter plots 2. Scatter Constant or non-constant scatter?
What to look for in scatter plots 3. Anything unusual Outlier
What to look for in scatter plots 3. Anything unusual Groupings
Rank relationships: weakest (1) to strongest (4) 2 4 1 3
Life Expectancy Example Life Expectancy and Availability of Doctors for a Sample of 40 Countries Life Expectancy 80 70 60 50 0 10000 20000 People per Doctor 30000 40000
Life Expectancy Example Life Expectancy and Availability of Televisions for a Sample of 40 Countries Life Expectancy 80 70 60 50 0 100 200 300 400 People per Television 500 600