# Basic econometrics exam questions and answers

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Atiq UR Rehman. For each week of the course I have tried to provide questions that cover the full range of material discussed during that week.

The questions range quite widely in character. Some check your knowledge of definitions, some address implications of concepts, some require finding numbers in tables, some ask you to do calculations, some are very easy, and some are very difficult. Because of this, not all questions are such that they are likely to appear on an exam, so how you score on these questions is not as important as how well you understand the logic of the answers.

Spending quality time on these questions should help your efforts to learn this course material. These questions have not been tested, so there may be problems with them. Some questions may be vague or defective, and some answers may be incorrect. Please bring to my attention any questions that are messed up.

Week 1: Statistical Foundations I The next 10 questions refer to a variable x distributed as follows: x 1 2 3 Prob x. The value of k is a. The expected value of x is a 2. The expected value of x squared is a 4. The variance of x is a 0. If all the x values were increased by 5 in this table, then the answer to question 3 would be a unchanged b increased by 25 c multiplied by 25 d none of the above 7.

If all the x values were increased by 5 in this table, then the answer to question 4 would be a unchanged b increased by 25 c multiplied by 25 d none of the above 8. If all the x values were multiplied by 5 in this table, then the answer to question 2 would be b unchanged b increased by 5 c multiplied by 5 d indeterminate 9. If all the x values were multiplied by 5 in this table, then the answer to question 3 would be b unchanged b increased by 25 c multiplied by 25 d none of the above The covariance between X and Y is a 0.

The correlation between X and Y is a 0. If all the X values in the table above were increased by 8, then the answer to question 18 would be a unchanged b increased by 8 c multiplied by 8 d multiplied by 64 If all the X values in the table above were increased by 8, then the answer to question 19 would be a unchanged b increased by 8 c multiplied by 8 d multiplied by 64 If all the X values and all the Y values in the table above were increased by 8, then the answer to question 18 would be a unchanged b increased by 8 c multiplied by 8 d multiplied by 64 If all the X values and all the Y values in the table above were increased by 8, then the answer to question 19 would be a unchanged b increased by 8 c multiplied by 8 d multiplied by 64 If all the X values in the table above were multiplied by 8, then the answer to question 18 would be a unchanged b increased by 8 c multiplied by 8 d multiplied by 64 If all the X values in the table above were multiplied by 8, then the answer to question 19 would be a unchanged b increased by 8 c multiplied by 8 d multiplied by 64 If all the X values and all the Y values in the table above were multiplied by 8, then the answer to question 18 would be a unchanged b increased by 8 c multiplied by 8 d multiplied by 64 The exam tests your conceptual, mathematical and graphical understanding of the material covered in this portion of the course.

Please review the content from the units covered before attempting the exam. The summary notes below are concise outlines of the main points covered in each session, but are presented only as a study aid in reviewing for the exam.

They do not provide the in-depth knowledge needed to successfully complete the exam problems. Once you are comfortable with the course content, complete the following practice exams.

### Sample Exam Questions for Econometrics

These exams are from Professor William Wheaton's course site, The exam should be completed in 2 hours. This is a closed book exam. You are not allowed to use notes, equation sheets, books or any other aids. Don't show me this again. This is one of over 2, courses on OCW. Find materials for this course in the pages linked along the left. No enrollment or registration. Freely browse and use OCW materials at your own pace.

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We don't offer credit or certification for using OCW. Made for sharing. Download files for later. Send to friends and colleagues.Interview Guides Business and Economy Economics. Economics Interview Questions and Answers Guide will explain us now that Economics is the social science that studies the production, distribution, and consumption of goods and services.

Economics Interview Questions and Answers are for your preparation of Economics jobs. Current economic models developed out of the broader field of political economy in the late 19th century. Economics is usually defined as the problem of how best to distribute limited resources, limited because wants are characterized as unlimited, but common sense tells us that rather than limited resources, there is an abundance of resources.

The difference is one of perspective and this is core to any alternative understanding of economics. If wants are the focus, then of course resources are limited by definition, but if minimum needs or essentials are used as the foundation, then resources are seen to be abundant. The difference is between a description and an explanation. A focus on wants or desires describes a market situation, while a focus on essentials or needs allows an explanation of choices to begin.

Is This Answer Correct? This depends on the country.

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Most currencies, however, were based on gold and silver. In America, in the 13 colonies, tobacco was mostly used as a type of currency. It is because both the private sector and public sector have a say in answering the basic economic questions, thus, there will be a degree of high efficiency due to the private sector involvement and social welfare too due to the public sector involvement.

## Multiple choice questions

It allows the Government to intervene when the economy faces market failure. The mixed economic system allows markets to operate freely until it fails to allocate resources efficiently, after this, the government agencies, such as the EU Competition Commission, are able to correct for these failures.

If this had been a completely free economic system, Government agencies would not have the means of power to be able to intervene. How would a deaf-mute access literary works? The main conditions required are: 1. Either a finite number of agents or goods. No externalities - That is, the consumption of one person should not harm or benefit anyone else. No matter how much a person is consuming, they must be able to be made slightly happier by consuming a bit more of something.

ECONOMETRICS- SimpleLinear Regression Analysis - Learn Deterministic PLF- Easy Basic Econometrics

There are many ways to describe the market structure of the automotive industry. Here are two: One of heterogeneous buyers makes up the population and nearly homogeneous sellers. This means that everyone the population needs a car because a car is not a luxury itembut everyone has different needs i. Thus, buyers are everyone in the population, and they are heterogeneous different. However, sellers are practically the same. Thus, they are homogeneous similar.

Buyers with high brand-preference and highly marketed sellers this means that many automobile buyers have a brand loyalty, and sellers market to cultivate that loyalty.Chapter 2 1.

Taking horizontal distances would have suggested that we had fixed the value of y and tried to find the appropriate values of x. In fact, we could fit an infinite number of lines with a zero average residual. By squaring the residuals before summing them, we ensure that they all contribute to the measure of loss and that they do not cancel.

It is then possible to define unique ordinary least squares estimates of the intercept and slope. However, the absolute value function is much harder to work with than a square. Squared terms are easy to differentiate, so it is simple to find analytical formulae for the mean and the variance. The population regression function PRF is a description of the model that is thought to be generating the actual data and it represents the true relationship between the variables.

The population regression function is also known as the data generating process DGP. The PRF embodies the true values of andand for the bivariate model, could be expressed as. Note that there is a disturbance term in this equation. In some textbooks, a distinction is drawn between the PRF the underlying true relationship between y and x and the DGP the process describing the way that the actual observations on y come about. Notice that there is no error or residual term in the equation for the SRF: all this equation states is that given a particular value of x, multiplying it by and adding will give the model fitted or expected value for y, denoted y.

It is also possible to write. This equation splits the observed value of y into two components: the fitted value from the model, and a residual term. That is the estimates and are constructed, for the sample data. An estimator is simply a formula that is used to calculate the estimates, i.

There are an infinite number of possible estimators; OLS is one choice that many people would consider a good one. We can say that the OLS estimator is best i. So it is optimal in the sense that no other linear, unbiased estimator would have a smaller sampling variance.

We could define an estimator with a lower sampling variance than the OLS estimator, but it would either be non-linear or biased or both! So there is a trade-off between bias and variance in the choice of the estimator.

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A list of the assumptions of the classical linear regression models disturbance terms is given in Box 2. We need to make the first four assumptions in order to prove that the ordinary least squares estimators of and are best, that is to prove that they have minimum variance among the class of linear unbiased estimators.

If these assumptions are violated which is dealt with in Chapter 4then it may be that OLS estimators are no longer unbiased or efficient. That is, they may be inaccurate or subject to fluctuations between samples. We needed to make the fifth assumption, that the disturbances are normally distributed, in order to make statistical inferences about the population parameters from the sample data, i. Making this assumption implies that test statistics will follow a t-distribution provided that the other assumptions also hold.

If the models are linear in the parameters, we can use OLS. The model can be linearised by taking logarithms of both sides and by rearranging. Although this is a very specific case, it has sound theoretical foundations e.

The effect of taking logs is to reduce the effect of extreme values on the regression function, and it may be possible to turn multiplicative models into additive ones which we can easily estimate. We can estimate this model using OLS, but we would not be able to obtain the values of both and, but we would obtain the value of these two coefficients multiplied together.

For those who have done some economics, models of this kind which are linear in the logarithms have the interesting property that the coefficients and can be interpreted as elasticities. Yes, in fact we can still use OLS since it is linear in the parameters. The null hypothesis is that the true but unknown value of beta is equal to one, against a one sided alternative that it is greater than one:.

The critical t-value from the t-table is 1. The value of the test statistic is in the rejection region and hence we can reject the null hypothesis.Reading assignments, lab exercises, and quiz questions from an undergraduate course given in Autumn Slides, lecture notes and assignments from a course.

Some of the documents are available via a GitHub repository. A set of questions from a econometrics course as Leicester, without answers, as a six-side PDF document. Archived materials from a Spring course that aims to take students "through the process of forming economic hypotheses, gathering the appropriate data, analyzing them, and effectively communicating their results".

Includes reading suggestions and assessment materials without answers. The course presumes knowledge of statistical methods in economics. This webpage provides ten multiple choice questions for introductory econometrics, written by Guy Judge of Portsmouth University.

The quiz is hosted by the Quia service, which allows academics to add their own quizzes by subscription. Marking and feedback on the correct answers is provided. Fifteen detailed lecture handouts in PDF are archived here along with 11 exercise sheets with answers. It includes extensive course materials, lecture notes, statistical tables, datasets and assignments and a number of past exams, going back tosome with answers in separate files.

This is a large set of exercises keyed to chapters of the textbook "Basic Econometrics" by Damodar N. Gujarati, with suggested answers for all questions. This course page has seven sets of extensive lecture notes totalling more than pages of explanatory material.

Available are notes from lectures, problem sets, and a sample exam. Our site Studying Economics has tips including writing and referencingrevisionand help with maths. This short video explains your rights to use material found online. Click in the bottom right to view full-screen.

The Economics Network. Francis J. DiTraglia, University of Pennsylvania.

Licence: Not known: assume All Rights Reserved. Added: 24 Jan Topics in Econometrics. EC Econometric Methods.ICM will support your Centre in providing appropriate qualifications, enabling your learners to meet their potential.

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Covid "Coronavirus" Announcement June examination sitting postponed. Read More. This site uses Cookies to enhance your experience. By continuing you are giving consent for us to set Cookies.Econometrics is the most difficult course for economics majors.

These tips should help you triumph over your econometrics test. If you can ace Econometrics, you can pass any Economics course. Share Flipboard Email. Social Sciences Economics U. Mike Moffatt. Professor of Business, Economics, and Public Policy. Mike Moffatt, Ph. Updated August 03, Difficulty: Easy.

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Find out the material covered on the test! Econometrics tests tend to be either mainly theory or mainly computational. Each one should be studied differently. Find out if you'll be allowed to have a formula sheet for the exam. Will one be provided for you, or will you be able to bring your own "cheat sheet" of econometric and statistical formulas? DO NOT wait until the night before to create an econometrics cheat sheet. Create it as you're studying, and use it when you're solving practice problems, so you'll be very familiar with your sheet.

Have a legible and organized econometrics cheat sheet. On a stressful test, you don't want to be searching for a term or trying to decipher the writing. This is critical for tests with time limits. Make songs to help you remember definitions.

It's silly, but it works! I make little drum beats with my thumb seriously.