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Scatter Plot Associations

2) On the axes below, sketch a scatter plot described:

a. a strong negative association
b. a strong association but r is near 0
c. a week but positive association

3) Of all Presidents since WW11, Jimmy Carter suffered the worst overall approval rating at 45%. George W. Bush's approval rating varied widely. It reached a high of 90% just after 9/11, but in mid-July 2004, it stood at 49% as measured by CNN/USA today/Gallup poll of 1000 randomly selected adults. Is there evidence to suggest that Bush's July 2004 rating reflects higher public approval than the 45% that Jimmy Carter averaged over his presidency?

Please see the attached.


Solution Summary

This solution is provided in an attached .xls file. It includes scatter plots for each of the associations and briefly states the hypothesis, z-statistic, and conclusion in regards to whether Bush's rating is better than Jimmy Carter's.