Real Study Data Set Who: Billionaires What: Accumulation of wealth When: 1992 Where: Around the world (Asia, Europe, Middle East, United States, etc.) Why: To see how the accumulation of wealth is distributed around the world. How: Compilation by Fortune magazine. Magazine compiles list of billionaires annually. Reference: Fortune, September 7,1992. "The Billionaires." pp. 98-138 Number of observations: 233 Variable Names: wealth: Wealth of family or individual in billions of dollars age: Age in years (for families it is the maximum age of family members) region: Region of the World (Asia, Europe, Middle East, United States and Other) This data set can be used to answer the question of where billionaires are located around the world, or which part of the world has more billionaires. You can also explore how the region of the world the billionaire is living in affects his overall wealth. Another topic to look into is the relationship between age and overall wealth.