Questions tagged [econometrics]

Econometrics is the application of statistical methods to economic data for various purposes such as of testing hypotheses, infering causal relationships and forecasting future trends. Only use this tag for questions relating to the theoretical aspect of an econometric technique.

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18 views

econometric stata outputt [closed]

please help me, what is the answer , how can I calculate predict value
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econometric stata output [closed]

help to answer b how can calculate CI
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42 views

Difference between a multiple regression and several linear regressions?

Context: I'm an undergrad who took Intermediate Econometrics more than a year ago and I'm trying to brush up on some of the skills. As I was reviewing multiple regression, I realized I didn't quite ...
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Python vs R (vs Stata): the old battle revisited

I am an avid Python user. I know Stata but I'm not a pro. I don't know R. I do econometrics (mostly time series, but also cross-section and panel), and statistics, and Python seems quite sufficient in ...
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Which one of these sources best represents fiscal deficit data?

I'm currently recollecting data for an econometrics model I want to build later on with a panel data model. However, sometimes it is difficult to find certain information. For example, I want to ...
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19 views

Applying Econometrics to Monetary Economics

I've been given a problem in which I am told that GDP is a function of the supply of money, prices and demand, $$Y = (M/P)^\delta$$ Taking logs, $$\log(Y) = \alpha + \beta \log(m - p) +u$$ ...
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1answer
166 views

Why are my 2SLS estimates much larger than my OLS estimates?

When performing IV regression, it is often taken as a sign of unbiasedness if the IV estimates are similar to the OLS estimates of the same model. My question is: If the estimates are very different,...
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1answer
32 views

Finding an instrumental variable for unemployment

I have the following regression model: Marijuana Usei = β0 + β1Unemployedi + β2Personal Incomei + β3Educational Attainmenti+ β4Sexi + β5Agei + β6Racei + εi The model is a probit model I need to ...
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If I want to add fixed effects for a difference-in-differences analysis, do I have to do a Hausman test first?

For my diff-in-diff specification, which is looking at whether a certain environmental regulation has an effect on exported goods, I was thinking of adding industry fixed effects to my equation. ...
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19 views

Interpretation of Impulse Response Functions for VAR models using Log First Differences

I am exploring a VAR model with 9 variables but for simplicity let us consider a model with only two variables and one lag. The VAR model would look something like this: $$ y_t = \alpha_{11}y_{t-1} + \...
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1answer
22 views

Mundlak Approach when panel data include time fixed effects

What would happen when, starting from a panel data model with group fixed effects and time fixed effects I apply the Mundlak approach? This is the model: $ y_{i,t} = c + \beta x_{i,t} + \alpha_i + \...
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Why is sample selection based on the dependent variable problematic?

Why is sample selection based on the dependent variable problematic? Why is sample selection based on the independent variable not problematic? Consider the following function. $saving=\beta_0+\...
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Ways to measure corruption

Can someone please tell me the best ways to measure corruption objectively? I know that there is a Corruption Perception Index (CPI by TI) and WGI, but these are subjective perceptions-based measures. ...
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1answer
34 views

How to determine price per unit and quantity sold of product from financial statement

Situation I hope I'm asking in the right place. I'm writing a paper on the application of quadratic functions in economics and intend to use the Total Revenue function as well as the Profit function ...
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Some confusions about instrumental variable (econometrics)

As the title says, I have some confusions about instrumental variable. According to my lecture note (which is supposed to be reliable), instrumental variable has two big properties: Validity: an ...
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Controlling for pre-treatment trends in diff-in-diff regression

I am trying to control for pre-treatment trends in my DiD style regression. My baseline regression is as follows (using Stata): ...
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1answer
33 views

Logistic (or probit) regression

How does the use of a logistic (or probit) regression help address the endogeneity concerns: explanatory variable is correlated with error term?
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comparison of micro production functions

There are many different production function estimation methods, relevant for micro and firm data. For example Olley-Pakes, Levinsohn-Petrin, Ackerberg et al., Wooldridge etc. But does anyone know of ...
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Causal Interpretation of $\beta_1$ with a Dummy explanatory variable

Suppose you run a regression (over the entire sample) of hourly earnings $Y$ with an intercept and a binary variable $D$, where $D$ takes on a value of $1$ if the individual has a college degree and $...
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1answer
42 views

Does anyone recognize the shape of this residuals vs. fitted plot?

Hello Stack Exchange community, I'm running a regression on a survey dataset which consists of 45,381 individuals in 36 countries using Stata. My model is specified as: ...
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How to apply propensity score matching to data from multiple years?

My research topic is: The impact of remittances on household welfare in Kyrgyzstan. I have two panel datasets for the years 2013 and 2016, (the data on migration and remittance receiving is included). ...
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2answers
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How to interpret fixed effect regression R-sq. results for panel data?

I runned a fixed effect regression in Stata (xtreg, fe) for panel data. I obtained below R-sq. results. How should I interpret them? Which one is my main interest(within,below or overall)? How can I ...
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how calculate average price after sell some share?

I don't have idea why average price is high when i sell some share after average down. I bought some share several time. For example. first 3 share at 10 price. second brought 2share at 15 and then ...
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1answer
38 views

Identification strategy for measuring impact of employee turnover on project quality

I am seeking help with identification strategy for figuring out causal direction in the following context: There is a company where project managers (PM) rotate every 3-7 years across the country/...
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1answer
50 views

Hedonic regression and attribute-shares in house prices

Given a house with price $P$ and attributes $h_1,\dots,h_n$, I want to estimate how much each attribute costs as a percentage of house price $P$. In other words, if we express house price as the sum ...
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1answer
28 views

Limit of random walk auto correlation function

Given the random walk process $y_{t}=y_{t-1}+e_{t}$, the auto correlation function is given by $corr(y_{t}, y_{t-h})=(\frac{t-h}{t})^{1/2}=(1-\frac{h}{t})^{1/2}$, which tends to 0 as t tends to ...
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2answers
55 views

Autocorrelation function of a random walk process

What is the intuition behind the result that the autocorrelation function of a random walk process $y_{t}=y_{t-1}+e_{t}$ tends to 1 as $t\rightarrow 0$? Thank you.
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1answer
102 views

Is there a reproducibility crisis in Economics?

I am an undergraduate economics student, and came across this paper by John Ionnadis on 'The Power of Bias in Economics Research'. the findings are quite bleak. https://academic.oup.com/ej/article/...
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Should I use start of quarter interest rate or end of quarter interest rate for time series regression?

Not sure what the correct procedure is since there is daily data for the period. Assume I can't find the average for the period.
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26 views

Unbiasedness of MoM estimator

Why is the method of moments estimator $g(\bar{Y})$ of $\theta$ only unbiased if $g(\mu)$ is a linear function of $\mu$? (Note: It is assumed that $\theta=g(\mu)$ for some function $g$ and $\bar{Y}$ ...
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1answer
21 views

How can I control for trade between UK and Australia in my difference-in-difference trade model?

I am doing a report on whether environmental regulation has an impact on trade, using a difference-in-difference model and seeing whether the EU Industrial Emissions Directive had an effect on UK ...
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1answer
26 views

Probit with panel data - assumptions violated with endogenous covariate?

I am trying to understand how does the fact that a regressor is endogenous (as a result of reverse causality) in a dynamic probit model violate any assumptions that I may need to make for this model. ...
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3answers
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What is the optimal forecast for the following moving average model?

Suppose that we have an MA(1) model where $y_t=\epsilon_t-\frac 1 2 \epsilon_{t-1}$ and $\epsilon_t$ are i.i.d. I want to find an optimal forecast of $y_{T+1}$ in the form of $Cy_T$ where C is a ...
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Microeconometrics course vs time series

I am currently a graduate student in Operations Research and I would like to learn econometrics, as it is not a part of the core curriculum. I am comfortable with matrix algebra (many courses used ...
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Calculating elasticity between log term and non-log term [duplicate]

Given the following, I am asked to calculate the elasticity of wages with respect to age: $$𝑙𝑛(𝑤_𝑖)=𝛽_1+𝛽_2𝑎𝑔𝑒_i+𝛽_3𝑎𝑔𝑒^2_𝑖+𝛽_4𝑌_𝑖+𝛽_5𝑇_𝑖+𝛽_6𝑀𝑎𝑟_𝑖+𝜖_𝑖$$ How does one ...
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1answer
36 views

Calculating elasticity between terms in a regression equation

Given the following regression: $ln(w_i)=\beta_1+\beta_2age+\beta_3age_i^2+\beta_4Y_i+\beta_5T_i+\beta_6Mar_i+\epsilon_i$ I am asked to calculate the elasticity of wages with respect to age. Is the ...
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1answer
76 views

Why cannot I compare AIC values obtained from nonlinear least squares and the ordinary least squares?

I have a time series dataset on UK consumption. I can (1) estimate an exponential trend (2) take the logarithm of UK consumption, estimate a linear trend for this logarithm, and exponentiate the ...
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1answer
240 views

How does one deal with trending variables in Linear Regression?

I have a linear regression model with two independent variables that takes the form: $$y_{it} = \beta_{0} + \beta_{1}x_{it} + \beta_{2}z_{it} + u_{it}$$ where $u_{it}$ is the error structure. I want ...
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2answers
38 views

What is the difference between Q4/Q4 and Y/Y GDP growth?

Per US media, the US economy grew 3.1% in 2018 Q4/Q4 and 2.9% in 2018 Y/Y. 2.9% seems the reference number in various databases (World Bank, Reuters, Bloomberg, etc) but what exactly does Q4/Q4 mean ...
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27 views

Cointegration but no Granger causality

Suppose I have two variables - $y_t$ and $x_t$ - which are cointegrated. I believe that (i) $y_t$ responds to deviations from the long-run equilibrium, (ii) the long-run elasticity of $y_t$ with ...
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1answer
23 views

GDP(Expenditure view of GDP): /Why aren't investments categorized as non-final goods?

My understanding is that consumption = consumption of final goods = whatever consumers buy from companies (with an adjustment for export-import-process + maybe housing is slightly different (not ...
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1answer
36 views

What is the purpose of multiple regression?

For instance, consider the following regression equation $College Score=\beta_0+\beta_1HighSchool GPA+u$. We interpret this $\beta_1$as the effect of a higher High School GPA holding all other ...
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1answer
18 views

Annual Fraud Recovery Over Time: Should I adjust for inflation?

I have a dataset of the total amount the U.S. Department of Justice obtained annually in settlements/judgments of government fraud cases from fiscal years 1988-2019. There's a lot of variation, but ...
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1answer
45 views

Why don't researchers use regularized probit model?

I know that a regularized logistic regression can be done to reduce training error, but I haven't found any economics research that uses a regularized probit model, only a regular probit model from ...
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1answer
30 views

How are low/middle/high classes defined mathematicaly?

I am only looking for mathematical references. I think this belongs to econometrics but am not sure nor where to look at it specifically. I suspect the definition is given with some kind of weighted ...
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2answers
45 views

Can logarithm and polynomial transformation be included in the same equation

Is it allowed to include logarithm and polynomial tranformations in the same econometric model. For instance : $$Y = x_1 + \log(x_2) + x_3 + x_3^2$$ I didn't find any interdiction however it seems to ...
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0answers
11 views

Where to find a list of U.S. policy changes for causal studies?

I'm currently trying to figure how the topic of my paper, which is supposed to be related to policy evaluation (causal inference). I thought it would be great if I could first obtain a list of recent ...
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2answers
34 views

Meaning of regression coefficients

I am having some trouble understanding exactly what is meant by the "true" Regression coefficients. Let's say it is stated that "the true regression coefficients are given as $y=a+bx+e$ where the ...
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1answer
41 views

Johansen test explanation

I am trying to understand the whole Johansen procedure via wikipedia and some other articles and I'm a noob in econometrics so there is a lot of notation and jargon that I think I am not familiar with....
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1answer
28 views

Logistic regression: Equation for marginal effect at the mean

I am estimating the following logistic regression (binomial family) by maximum likelihood: $$ \ln\left(\frac{Y}{1-Y}\right) = \beta_{0} + \beta_{1}D + \beta_{2}X + \epsilon$$ where D is a dummy. ...

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