If individuals who sit in the back of the classroom receive lower grades on average than the rest of the class, does that mean that sitting in the back of a classroom causes one to perform poorly on exams?
A. Not necessarily. The reoccurrence of a certain relationship between two variables does not necessarily imply causation.
B. The reccurrence of such a relationship is definitely caused by the variation of another variable.
C. The reccurrence of such a relationship is sufficient evidence that sitting in the back of a classroom will lead to lower grades.
D. The reoccurrence of such a relationship is sufficient evidence that students who receive low grades prefer to keep a low profile and always sit in the back of the classroom.
Answer: A
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The quantity of shoes produced is measured along the horizontal axis of a PPF and the quantity of shirts is measured along the vertical axis. As you move down toward the right along the PPF, the marginal cost of
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a. Individual firm level b. Industry level c. Customer Level d. None of the above
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a. the relationship between two economic variables cannot be determined. b. the analysis is true for the individual but not for the economy as a whole. c. all other variables except the ones specified are assumed to be constant. d. their conclusions are based on normative economics rather than positive economic analysis.