Question: Use the scatterplot for life expectancy and infant mortality in Figure 7.4. a. Insert a best-fit line in the given scatterplot. b. Estimate or compute

Use the scatterplot for life expectancy and infant mortality in Figure 7.4.
a. Insert a best-fit line in the given scatterplot.
b. Estimate or compute r and r2. Based on your value for r2, determine how much of the variation in the variable can be accounted for by the best-fit line.
c. Briefly discuss whether you could make valid predictions from this best-fit line.

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