12. Which of the following highlights a requirement of a good instrumental variable?
a. It should be included in and endogenous to the equation of interest.
b. It should be included in and exogenous to the equation of interest.
c. It should be omitted from and exogenous to the equation of interest.
d. It should be omitted from and endogenous to the equation of interest.
13. Which of the following statements is true?
a. If a model has several explanatory variables and several variations to the general model are to be
presented, it is better to report the results in an equation form, rather than a tabular form.
b. If a model has several explanatory variables and several variations to the general model are to be
presented, it is better to report the results in a tabular form, rather than an equation form.
c. The adjusted R-squared should always be listed in the result section of a research paper, while the R-
squared may or may not be listed.
d. The number of observations for each equation should always be listed in the result section of a
research paper, while the R-squared may or may not be listed.
14. Which of the followings statements is true?
a. The title of a research paper should be mentioned only in the introduction section.
b. The title page should not include any other information except the title of the research paper.
c. Graphs and tables should be included in the main body only.
d. All equations should begin on a new line and should be numbered consecutively.