Econometrics & Statistical Methods Exam 2026: University &
Graduate-Level Practice Test — Regression Analysis, Hypothesis
Testing, Time Series, Statistical Inference & Model Diagnostics —
190 Multiple-Choice Questions with Answers & Detailed Rationales
Section 1: Foundations of Econometrics and Linear Regression (Questions 1-25)
Question 1
Which of the following best describes the primary goal of econometrics?
A. To prove economic theory is correct using mathematical models.
B. To use statistical methods to estimate economic relationships and test economic theories.
C. To forecast future economic events with perfect accuracy.
D. To develop new economic theories based on mathematical proofs.
Correct Answer: B
Explanation: Econometrics applies statistical methods to economic data to empirically
estimate relationships, test hypotheses, and forecast, bridging theory and reality.
Question 2
In the simple linear regression model
y
=
β
0
+
β
1
,x
+
u
y=β
0
+β
1
x+u, what does the error term '
u
u' represent?
A. The predicted value of y.
B. The change in y for a one-unit change in x.
C. The unobserved factors and random variation affecting y.
D. The systematic component of the model.
Correct Answer: C
Explanation: The error term '
u
u' captures all factors other than '
x
x' that influence '
y
y', plus any inherent randomness.
,Question 3
The Ordinary Least Squares (OLS) method estimates the regression coefficients by:
A. Minimizing the sum of the absolute residuals.
B. Maximizing the R-squared value.
C. Minimizing the sum of the squared residuals.
D. Ensuring the residuals are normally distributed.
Correct Answer: C
Explanation: OLS is defined by its objective: to find the coefficients that minimize the sum of
the squared differences between observed and predicted values.
Question 4
In the context of the OLS model
y
=
β
0
^
+
β
1
^
x
+
u
^
, y=
β
0
^
+
β
1
^
x+
u
^
, which of the following is a property of the OLS residuals
u
^
u
^
?
A. They are perfectly correlated with the independent variable
x
x.
B. Their sum is always equal to one.
Graduate-Level Practice Test — Regression Analysis, Hypothesis
Testing, Time Series, Statistical Inference & Model Diagnostics —
190 Multiple-Choice Questions with Answers & Detailed Rationales
Section 1: Foundations of Econometrics and Linear Regression (Questions 1-25)
Question 1
Which of the following best describes the primary goal of econometrics?
A. To prove economic theory is correct using mathematical models.
B. To use statistical methods to estimate economic relationships and test economic theories.
C. To forecast future economic events with perfect accuracy.
D. To develop new economic theories based on mathematical proofs.
Correct Answer: B
Explanation: Econometrics applies statistical methods to economic data to empirically
estimate relationships, test hypotheses, and forecast, bridging theory and reality.
Question 2
In the simple linear regression model
y
=
β
0
+
β
1
,x
+
u
y=β
0
+β
1
x+u, what does the error term '
u
u' represent?
A. The predicted value of y.
B. The change in y for a one-unit change in x.
C. The unobserved factors and random variation affecting y.
D. The systematic component of the model.
Correct Answer: C
Explanation: The error term '
u
u' captures all factors other than '
x
x' that influence '
y
y', plus any inherent randomness.
,Question 3
The Ordinary Least Squares (OLS) method estimates the regression coefficients by:
A. Minimizing the sum of the absolute residuals.
B. Maximizing the R-squared value.
C. Minimizing the sum of the squared residuals.
D. Ensuring the residuals are normally distributed.
Correct Answer: C
Explanation: OLS is defined by its objective: to find the coefficients that minimize the sum of
the squared differences between observed and predicted values.
Question 4
In the context of the OLS model
y
=
β
0
^
+
β
1
^
x
+
u
^
, y=
β
0
^
+
β
1
^
x+
u
^
, which of the following is a property of the OLS residuals
u
^
u
^
?
A. They are perfectly correlated with the independent variable
x
x.
B. Their sum is always equal to one.
