SOLUTION MANUAL FOR ECON 320 FINAL
EXAM QUESTIONS AND VERIFIED ANSWERS
A study based on OLS regressions is internally valid if - correct
answer- The OLS estimator is unbiased and consistent, and
the standard errors are computed in a way that makes
confidence intervals have the desired confidence level
A type II error is: - correct answer- the error you make when
not rejecting the null hypothesis when it is false
Adjusted R62 or Rbar^2 is given by - correct answer- 1-(n-
1)/(n-k-1)(SSR)/(TSS)
All of the following are examples of joint hypotheses on multiple
regression coefficients, with the exception of - correct answer-
Ho: B1+B2=1
An example of a quadratic regression model is - correct
answer- Yi=Bo+B1X+B2X^2-Ui
, Analyzing the behavior of unemployment rates across U.S. states
in March of 2010 is an example of using: - correct answer-
Cross-sectional Data
Applying the analysis from the california test scores to another
US state is an example of looking for - correct answer-
external validity
Assume that you assign the following subjective probabilities for
you final grade in your econometrics course: A: 0.20, B: 0.50, C:
0.20, D: 0.08, F: 0.02. The expected value is: - correct answer-
2.78
Binary Variables: - correct answer- can take on only two
values
Consider the estimated equation from you text book: Test
Score=698.9-2.28*STR, R^2=0.051, SER=18.6 (10.4)(0.52). The t-
statistic for the slope is approximately: - correct answer-
4.38
Consider the following linear transformation of a random
variable: Y=x-Ux/Ox, where Ux is the mean of x and Ox is the
EXAM QUESTIONS AND VERIFIED ANSWERS
A study based on OLS regressions is internally valid if - correct
answer- The OLS estimator is unbiased and consistent, and
the standard errors are computed in a way that makes
confidence intervals have the desired confidence level
A type II error is: - correct answer- the error you make when
not rejecting the null hypothesis when it is false
Adjusted R62 or Rbar^2 is given by - correct answer- 1-(n-
1)/(n-k-1)(SSR)/(TSS)
All of the following are examples of joint hypotheses on multiple
regression coefficients, with the exception of - correct answer-
Ho: B1+B2=1
An example of a quadratic regression model is - correct
answer- Yi=Bo+B1X+B2X^2-Ui
, Analyzing the behavior of unemployment rates across U.S. states
in March of 2010 is an example of using: - correct answer-
Cross-sectional Data
Applying the analysis from the california test scores to another
US state is an example of looking for - correct answer-
external validity
Assume that you assign the following subjective probabilities for
you final grade in your econometrics course: A: 0.20, B: 0.50, C:
0.20, D: 0.08, F: 0.02. The expected value is: - correct answer-
2.78
Binary Variables: - correct answer- can take on only two
values
Consider the estimated equation from you text book: Test
Score=698.9-2.28*STR, R^2=0.051, SER=18.6 (10.4)(0.52). The t-
statistic for the slope is approximately: - correct answer-
4.38
Consider the following linear transformation of a random
variable: Y=x-Ux/Ox, where Ux is the mean of x and Ox is the
