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    Business
  3. Study Set
    Introductory Econometrics
  4. Exam
    Exam 15: Instrumental Variables Estimation and Two Stage Least Squares
  5. Question
    Consider the Following Simple Regression Model Y = <Sub>0</sub>
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Consider the Following Simple Regression Model Y = 0

Question 23

Question 23

Multiple Choice

Consider the following simple regression model y = Consider the following simple regression model y =   <sub>0</sub> +   <sub>1</sub>x<sub>1</sub> + u. Suppose z is an instrument for x. Which of the following conditions denotes instrument relevance? A) Cov(z,u)  > 0 B) Cov(z,u)  < 0 C)  Cov(z,x)    0 D)  Cov(z,x z)  = 0 0 + Consider the following simple regression model y =   <sub>0</sub> +   <sub>1</sub>x<sub>1</sub> + u. Suppose z is an instrument for x. Which of the following conditions denotes instrument relevance? A) Cov(z,u)  > 0 B) Cov(z,u)  < 0 C)  Cov(z,x)    0 D)  Cov(z,x z)  = 0 1x1 + u. Suppose z is an instrument for x. Which of the following conditions denotes instrument relevance?


A) Cov(z,u) > 0
B) Cov(z,u) < 0
C) Cov(z,x)
Consider the following simple regression model y =   <sub>0</sub> +   <sub>1</sub>x<sub>1</sub> + u. Suppose z is an instrument for x. Which of the following conditions denotes instrument relevance? A) Cov(z,u)  > 0 B) Cov(z,u)  < 0 C)  Cov(z,x)    0 D)  Cov(z,x z)  = 0 0
D) Cov(z,x z) = 0

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