Statistics
posted by John .
Suppose a study finds that the correlation coefficient relating family income and SAT scores is r = +0.98. Which of the following are proper conclusions?
I. Poverty causes low SAT scores
II. Wealth causes high SAT scores
III. There is a very strong association between family income and SAT scores
I only
II only
III only
I and II only
II and III only

III only. Correlation coefficients do not indicate causality, only a relationship.
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