Question

In Exercise we saw that there were several potential high influence points. After a researcher set aside those four countries, she refit the model in Exercise 33. A plot of residuals vs. predicted values showed:
a) What assumption and/or condition does the model violate?
A histogram of GDP per capita shows:
b) Why might this be problematic? What might you suggest to the researcher before proceeding?


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  • CreatedMay 15, 2015
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