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Figure 2-16 In the following graph the x-axis shows the number of times a commuter rail train stops at a station per hour and the y-axis shows the number of commuter rail passengers per hour. Commuter Rail Passengers by Frequency of Service Figure 2-16 In the following graph the x-axis shows the number of times a commuter rail train stops at a station per hour and the y-axis shows the number of commuter rail passengers per hour. Commuter Rail Passengers by Frequency of Service   -Refer to Figure 2-16.Which of the following conclusions should not be drawn from observing this graph? A)  There is a positive correlation between the frequency of service and the number of passengers. B)  When there are 5 stops per hour,there are approximately 200 passengers. C)  More stops per hour is associated with more passengers per hour. D)  No other factors besides the frequency of service affect the number of passengers. -Refer to Figure 2-16.Which of the following conclusions should not be drawn from observing this graph?


A) There is a positive correlation between the frequency of service and the number of passengers.
B) When there are 5 stops per hour,there are approximately 200 passengers.
C) More stops per hour is associated with more passengers per hour.
D) No other factors besides the frequency of service affect the number of passengers.

E) B) and C)
F) A) and B)

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When economists make


A) positive statements,they are speaking not as policy advisers but as scientists.
B) positive statements,they are speaking not as scientists but as forecasters.
C) normative statements,they are speaking not as policy advisers but as scientists.
D) normative statements,they are speaking not as policy advisers but as model-builders.

E) All of the above
F) A) and B)

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In the circular-flow diagram,factors of production include land,labor,and capital.

A) True
B) False

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In a certain economy,toys and greeting cards are produced,and the economy currently operates on its production possibilities frontier.Which of the following events would allow the economy to produce more toys and more greeting cards,relative to the quantities of those goods that are being produced now?


A) The economy experiences economic growth.
B) There is a technological advance in the toy industry,but the greeting card industry experiences no such advance.
C) There is a technological advance in the greeting card industry,but the toy industry experiences no such advance.
D) All of the above are correct.

E) All of the above
F) B) and C)

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An economic outcome is said to be efficient if the economy is


A) using all of the scarce resources it has available.
B) conserving on resources,rather than using all available resources.
C) getting all it can get from the scarce resources it has available.
D) able to produce more than what is currently being produced without additional resources.

E) B) and C)
F) A) and B)

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When two variables have a negative correlation and the x-variable decreases,


A) the y-variable increases.
B) the y-variable decreases.
C) the y-variable stays the same.
D) the x-variable can never be positive.

E) A) and B)
F) A) and C)

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In economics,capital refers to


A) the finances necessary for firms to produce their products.
B) buildings and machines used in the production process.
C) the money households use to purchase firms' output.
D) stocks and bonds.

E) A) and B)
F) A) and D)

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Which of the following is not correct?


A) Evaluating statements about how the world should be involves values as well as facts.
B) Positive statements can,in principle,be confirmed or refuted by examining evidence.
C) Normative statements can be judged using data alone.
D) Deciding what is good or bad policy is not just a matter of science.

E) A) and B)
F) B) and C)

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The point where both x and y are zero is known as the


A) origin.
B) null.
C) zero coordinate.
D) center.

E) B) and C)
F) None of the above

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Figure 2-1 Figure 2-1   -Refer to Figure 2-1.Which arrow represents the flow of spending by households? A)  A B)  B C)  C D)  D -Refer to Figure 2-1.Which arrow represents the flow of spending by households?


A) A
B) B
C) C
D) D

E) A) and B)
F) None of the above

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Figure 2-14 Figure 2-14   -Refer to Figure 2-14.The curves shown are A)  supply curves. B)  demand curves. C)  preference curves. D)  income-consumption curves. -Refer to Figure 2-14.The curves shown are


A) supply curves.
B) demand curves.
C) preference curves.
D) income-consumption curves.

E) B) and C)
F) A) and B)

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Figure 2-14 Figure 2-14   -Refer to Figure 2-14.The movement from point B to point C is a(n)  A)  shift of the demand curve. B)  movement along the demand curve. C)  indication that the price of grapes has changed. D)  indication that the costs incurred by firms that produce grapes have changed. -Refer to Figure 2-14.The movement from point B to point C is a(n)


A) shift of the demand curve.
B) movement along the demand curve.
C) indication that the price of grapes has changed.
D) indication that the costs incurred by firms that produce grapes have changed.

E) B) and C)
F) A) and D)

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Analysis of data on workers and those looking for work is conducted by economists at the


A) Office of Management and Budget.
B) Department of Labor.
C) Congressional Budget Office.
D) Department of the Treasury.

E) All of the above
F) B) and D)

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Economic models


A) are constructed to mirror reality as closely as possible,and in this respect economic models are no different from other scientific models.
B) are constructed to mirror reality as closely as possible,and in this respect economic models are very different from other scientific models.
C) are simplifications of reality,and in this respect economic models are no different from other scientific models.
D) are simplifications of reality,and in this respect economic models are very different from other scientific models.

E) B) and C)
F) C) and D)

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Economists speaking like scientists make


A) positive statements.
B) prescriptive statements.
C) claims about how the world should be.
D) More than one of the above is correct.

E) A) and D)
F) None of the above

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Economists make use of assumptions,some of which are unrealistic,for the purpose of


A) teaching economics to people who have never before studied economics.
B) advancing their political agendas.
C) developing models when the scientific method cannot be used.
D) focusing their thinking.

E) None of the above
F) A) and C)

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Using the outline below,draw a circular-flow diagram representing the interactions between households and firms in a simple economy.Explain briefly the various parts of the diagram. Using the outline below,draw a circular-flow diagram representing the interactions between households and firms in a simple economy.Explain briefly the various parts of the diagram.

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blured image This diagram should duplicate the essen...

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In the early 19th century,the Russian government sent doctors to southern Russian villages to provide assistance during a cholera epidemic.The villagers noticed that wherever doctors appeared,people died.Therefore,many doctors were chased away from villages,and some were even killed.This reaction to the correlation between doctors and deaths is most likely a problem of


A) omitted variables.
B) reverse causality.
C) government propaganda.
D) medical incompetence.

E) A) and B)
F) A) and C)

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When a production possibilities frontier is bowed outward,the opportunity cost of producing an additional unit of a good


A) increases as more of the good is produced.
B) decreases as more of the good is produced.
C) does not change as more of the good is produced.
D) may increase,decrease,or not change as more of the good is produced.

E) C) and D)
F) B) and C)

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Figure 2-14 Figure 2-14   -Refer to Figure 2-14.The movement from point A to point B is a(n)  A)  shift of the demand curve. B)  indication of a change in preferences for grapes. C)  movement along the demand curve. D)  indication of an increase in income. -Refer to Figure 2-14.The movement from point A to point B is a(n)


A) shift of the demand curve.
B) indication of a change in preferences for grapes.
C) movement along the demand curve.
D) indication of an increase in income.

E) All of the above
F) B) and D)

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