Question: The sactterplot and the model in Fig. 57 describe the association between years and the total Wealth (in billions of dollars) of the worlds 80

The sactterplot and the model in Fig. 57 describe the association between years and the total Wealth (in billions of dollars) of the world€™s 80 richest people.

a. Is the association positive, negative, or neither? What does that mean in this situation?
b. Estimate the rate of change of the total wealth of the world€™s 80 richest people.

Years versus Wealth of World's 80 Richest People 1.8 1.6 6 14 1.2 0.8 0.6 2002 2004 2006 2008 2010 2012 2014 Year

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