Questions from Econometrics

Q: After reading this chapter’s analysis of test scores and class size,

After reading this chapter’s analysis of test scores and class size, an educator comments, “In my experience, student performance depends on class size, but not in the way your regressions say. Rather...

Q: Read the box “The Effect of Ageing on Healthcare Expenditures:

Read the box “The Effect of Ageing on Healthcare Expenditures: A Red Herring?” a. Consider a male aged 60 years. Use the results from column (1) of Table 8.1 and th...

Q: Compute the following probabilities: a. If Y is distributed

Compute the following probabilities: a. If Y is distributed X23, find Pr (Y

Q: Read the box “The Demand for Economics Journals” in Section

Read the box “The Demand for Economics Journals” in Section 8.3. a. The box reaches three conclusions. Looking at the results in the table, what is the basis for ea...

Q: Refer to Table 8.3. a. A researcher

Refer to Table 8.3. a. A researcher suspects that the effect of %Eligible for subsidized lunch has a nonlinear effect on test scores? In particular, he conjectures that increases in this variable from...

Q: This problem is inspired by a study of the gender gap in

This problem is inspired by a study of the gender gap in earnings in top corporate jobs (Bertrand and Hallock, 2001). The study compares total compensation among top executives in a large set of U.S....

Q: X is a continuous variable that takes on values between 5 and

X is a continuous variable that takes on values between 5 and 100. Z is a binary variable. Sketch the following regression functions (with values of X between 5 and 100 on the horizontal axis and valu...

Q: Explain how you would use approach 2 to calculate the confidence interval

Explain how you would use approach 2 to calculate the confidence interval discussed below Equation (8.8). Data from Equation 8.8:

Q: Suppose that you have just read a careful statistical study of the

Suppose that you have just read a careful statistical study of the effect of improved health of children on their test scores at school. Using data from a project in a West African district in 2000, t...

Q: Read the box “The Effect of Ageing on Healthcare Expenditures:

Read the box “The Effect of Ageing on Healthcare Expenditures: A Red Herring?” in Section 8.3. Discuss the internal and external validity as a causal effect of the...