For each of the following variables, give your best guess (and an explanation) of whether the variables
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For each of the following variables, give your best guess (and an explanation) of whether the variables have a positive, negative, or roughly zero correlation in a cross-section of countries:
a. The use of antidepressants and the size of GDP
b. The number of television sets and child mortality
c. The sale of ice cream and the number of swimming accidents
d. Astrological sign and IQ
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