Professor Jones surveyed her six classes and found that students who slept less than five hours the night before the exam received lower exam scores than those students who slept seven hours or more. What kind of correlation is this relationship between hours of sleep and scores?

0 votes
     zero
      negative
      causal
      positive
asked May 17, 2013 in Psychology by anonymous
    

1 Answer

0 votes
positive
answered May 18, 2013 by ProAnswers ~Top Expert~ (7,505 points)

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