Which of the following correlations represents the weakest degree of relation between two variables?
A) Daily calcium intake and bone mass density, r = +.11
B) Degree of exposure to lead and IQ scores in children, r = –.12
C) Hours of exposure to media violence and aggressive behavior, r = +.31
D) Number of cigarettes smoked per day and incidence of lung cancer, r = +.39
Answer: A
Psychology
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