Question

From the Statistical Abstract of the United States, we obtained data on percentage of gross domestic product (GDP) spent on health care and life expectancy, in years, for selected countries. Those data are provided on the WeissStats CD. Do the required parts separately for each gender.
a. Obtain a scatterplot for the data.
b. Decide whether finding a regression line for the data is reasonable. If so, then also do parts (c)–(f).
c. Determine and interpret the regression equation for the data.
d. Identify potential outliers and influential observations.
e. In case a potential outlier is present, remove it and discuss the effect.
f. In case a potential influential observation is present, remove it and discuss the effect.


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  • CreatedAugust 13, 2015
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