A researcher found that the noise level on floors of college dormitories (measured in decibels) correlated -.45 with the grades of students who lived on those floors. What is the best interpretation of this correlation?

a. noise and grades are unrelated
b. noise causes grades to go up
c. noise causes grades to go down
d. getting high grades causes noise to go up
e. none of the above

Answer: e. none of the above

Psychology

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