Exam 2: Economic Methods and Economic Questions

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As the number of billboards for a firm's product increases from 100 to 500,its sales increase from $1,000 to $10,000.If this information is plotted on a line chart,the slope of the line equals ________.

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________ occurs when the direction of cause and effect is mixed up in a study.

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Which of the following is a feature of experiments?

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Which of the following graphical representations is ideal for comparing a single variable across different groups?

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Which of the following statements correctly differentiates between a model and a hypothesis?

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A model is based on an assumption that an additional year of education increases a student's future wage by 20 percent. -Refer to the scenario above.Which of the followings statements is true of the model?

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Which of the following is a property of a good economic question?

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The following table shows the monthly wages of five different individuals. The following table shows the monthly wages of five different individuals.    -Refer to the table above.What is the average monthly wage? -Refer to the table above.What is the average monthly wage?

(Multiple Choice)
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Which of the following statements is true?

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Which of the following statements is true of models?

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To conduct a randomized experiment,researchers usually classify the participants into a ________.

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A model ________.

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Which of the following statements is true about the mean of a series?

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Which of the following arguments based on anecdotes is most likely to be incorrect?

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Which of the following is most likely to be represented by a time series graph?

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When two variables move in the same direction,they are said to be ________.

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To test the effectiveness of a newly developed medicine,300 patients suffering from a heart ailment were divided into two groups of 150 people each.One group was treated with the new medicine,while the other was treated with an already existing,widely used medicine.In this scenario,identify the treatment group and the control group.What is the rationale behind dividing patients into two groups?

(Essay)
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Does correlation always imply causation? Why or why not? Explain with the help of real-life examples.

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Which of the following implies that a model is an approximation?

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Which of the following statements identifies a difference between correlation and causation?

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