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  3. Queen Mary, University Of London (QMUL)
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ECN225 Econometrics 2 2018 Past Paper Questions and Model Answers

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High-quality past paper questions and answers for the ECN225 Econometrics 2 module for the Queen Mary University of London Economics Course. Each question is reproduced and high-quality full-mark scores are written up clearly for each one. Great for preparing for exams, studying and solidifying you...

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  • January 20, 2020
  • May 26, 2020
  • 14
  • 2017/2018
  • Exam (elaborations)
  • Unknown

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ECN225 Econometrics 2 – 2018
Questions and Answers
Question 1




a) The coefficient 𝛽 is the average hourly earnings (in dollars per hour) of all individuals who do not
have a college degree, which in this case is 7.98. The coefficient 𝛽 is the difference in average wages
for those who do have a college degree compared to those who do not. Therefore the average wage
for those who do have a college degree is 7.98 + 6.21 = 14.19 dollars per hour.

b) To determine whether the difference between the wage earnt by college educated workers and
the wage earnt by other workers is statistically different, we perform the following two-sided
hypothesis test:

𝐻 :𝛽 = 0
𝐻 :𝛽 ≠ 0

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