# 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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### Stationarity vs weak dependence

I am doing an undergraduate course in econometrics where we are using the text Introduction to Econometrics by Dougherty. While going through time series, it was mentioned that one of the necessary ...
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### Do applied papers introduce new notation for every regression?

I am currently writing an empirical paper which reports on the results from estimating a number of regression models. Question: is it standard to introduce new notation for each of these models, or ...
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### What's the minimum number of datapoints in order to run a diff-in-diff?

I was thinking about running a diff-in-diff with fixed effect in order to deal with a panel data experiment. The problem is that I don't know how many datapoints I need in order to the experiment be ...
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### Interacting covariates with the instrument in the first stage

If I want to run a 2 stage least squares (2SLS) regression with: Relationship of interest: $Y = \alpha + \beta X + \varepsilon$, where $X$ is the endogenous explanatory variable of interest. If I ...
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### How can anyone possibly predict how the price of anything (stocks, Bitcoin, fiat, etc.) will change without "insider knowledge"? [closed]

Other than the fact that all centralized (and thus "quick") exchanges require KYC/AML nonsense, making it impossible for me to have an account there, I've never dared to even try once to &...
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### Do I have to bootstrap the dummy variables used for event dates in an event study?

I am doing a project where i am trying to estimate the effect of the inclusion of a stock in an ETF on its returns, meaning that i am trying to see how the inclusion of a stock in a given ETF affects ...
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### is it better a low or high WACC for a company valuation?

I'm doing a statistical report of some italian banks and I'm looking for correlation between Corporate governance practices and bank values. I'm focusing on WACC and I would like to understand if an ...
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### Behavioral responses of tax policy on labour supply ( first time doing Difference in Differences)

I am trying to estimate the causal effects of the The Working Income Tax Benefit (WITB) on the labour supply of married women in Canada. The WITB is essentially equivalent to the EITC. I am looking at ...
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### Very basic question about confidence intervals

Suppose that I estimate a (frequentist) confidence interval for the sample mean of a variable $X$, say at the 95% level. Suppose I also estimate a 95% confidence for the sample mean of a variable $Y$. ...
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### Advice on method for analyzing the effects of increase in minimum wage

As a hobbyist and generally curious person with a lot of free time at home, I was curious what would be a good method to analyze the effect of an increase in the minimum wage of a country if you only ...
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### How to estimate a model by pooled OLS when we DO NOT have panel data?

The data set is mostly binary with years and location. We have a linear probability model. We DO NOT have panel data. How to estimate this model in R by Pooled OLS? Again, we DO NOT have panel data.
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### Making sure the p-values of my OLS estimates are correct

I have learned the basics of the Classical Linear Regression Model and also various diagnostic tests to check if the assumptions of the CLRM are met, such as homoskedadticity, absence of near perfect ...
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### Comparison of coefficients in log(y_t) and log(y_t/y_0) LHS specifications in LP-IV

I would have a question related to econometrics. Likely not all the details are needed, but please bear with me. My goal is to use local projection with an instrument to find out the response of an ...
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### Help interpreting standard deviation

I am looking at the 1979 cohort of the National Longitudinal Survey of Youth from the BLS. See here : https://www.bls.gov/nls/nlsy79.htm I am just having some trouble interpreting the values for ...
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### Why N>T is required on system GMM estimations?

My question is why N>T is required when working with dynamic panel estimations based on system GMM, such as xtdpdsys at stata. Is that based on the potential lost of information due to orthogonal ...
132 views

### Interpretation of a 2SLS Coefficient - Civil War Determinants

I am a bit confused because of the interpretation of a coefficient in my analysis. I am using 2SLS in two different subsamples with economic growth as endogenous variable. It is instrumented by a ...
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### Short textbook of econometrics?

I'm looking for a textbook about econometrics, but I'd like to find one with the following features : Short (350 pag. max) Introductory Clear on the math and stats used With exercises Do you know a ...
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### Why do we need at least as many instrumental variables as endogenous regressors to identify parameters in 2SLS?

As the title says. Why do we need at least as many instrumental variables as endogenous regressors to identify parameters?
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### Monte carlo simulation for macroeconomist

I would like to know if it is useful to learn Monte Carlo simulations if I want to focus on macroeconometrics ? Or even is it useful outside of academics ?
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### Does GMM have any assumptions that you can't test empirically (and must instead argue qualitatively for)?

My understanding is that you can empirically test some of the main assumptions required for using a GMM estimator. Namely, I understand that you can test over-identifying restrictions with Hansen's J ...
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### Cointegration in stock market between different market places

Hi guys im interested in cointegration in stock market between Brazil, USA, London, China, India, Argentina and Hong Kong. Since I want to compare each country’s index to the BR index, how do i do to ...
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### Imputing # of unemployed from Labor Force Survey

I am working on state-level data, where one state has recently stopped publishing the absolute figures for the number of the unemployed. Instead, it currently only releases U and LFP rates. ...
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### Dif-in-Dif aggregating or not?

If I have data that is on some level, say industry-county-year, and a certain treatment, say a regulation change in some states in certain years. Is it possible to run a Dif-in-Dif on the industry-...
38 views

### complex Difference-in-difference formula

I have 5-year sales information from a grocery store in Canada. I want to check whether an event that happened in 2017, affected the effect of the price of a product on its sales. For example, imagine ...