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Questions tagged [applied-econometrics]

Use this tag to discuss empirical papers and issues arising when applying theoretical models to data.

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13
votes
0answers
270 views

How accurate is duality?

In economic theory we know that with the use of some calculus, Hotellings Lemma and Sheppards lemma we can derive a given firms supply function and in term its Profit function. With data of a given ...
11
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4answers
521 views

What are some good repositories for economic data

Economic data is a very broad concept. It can include discrete preference relation data-sets as well as extensive time series data. But it is important that theories are tested against data, and the ...
10
votes
2answers
4k views

Difference-in-differences in 2SLS regression

Usually when we do a difference-in-differences estimation, we do it in a OLS reduced form as follows: $$ Y_{it}=\alpha After_t+\gamma Treatment_i+\delta After*Treatment_{i,t}+X_{it}\beta+\epsilon_{i,...
8
votes
1answer
4k views

How should one determine the proper number of lags in a time series regression?

I am using time series data in economic model estimation. I want determine proper lag for Error Correcting Model (ECM) model for example. I can check AIC, SC and HQ criterion for determine proper lag. ...
7
votes
2answers
3k views

Why does slowly decaying ACF indicate that a time series is non-stationary?

I am a student studying time series econometric online and looking for help talking around some of the principles. There is one point I am trying to understand better. I've come across some ...
6
votes
2answers
296 views

Cobb-Douglas production function with expenditures rather than units

I want to estimate a standard Cobb-Douglas production function of the form $ Y=AK^{\alpha}L^{\beta}$. However, I only have data on labour expenditures, not units of labour. I don't have data on the ...
6
votes
2answers
164 views

Are there conventions in economics for coding the distance between states?

I know there are lots of gravity models in economics that take as an input distance between countries. My understanding is distance is typically coded based on the distance between capital cities, ...
6
votes
1answer
387 views

Omitted variables in gravity model

I'm trying to construct a gravity model for EU trade flows using a panel dataset, but am suffering from what appears to be a persistent omitted variable problem. My residuals display a queer log-like, ...
6
votes
2answers
145 views

Using another person's guess as an IV

In Estimates of the Economic Return to Schooling from a New Sample of Twins by Orley Ashenfelter and Alan Krueger, they correct sampling error with an IV. They claim that their results imply a larger ...
6
votes
1answer
118 views

Is there empirical evidence on usability of Cobb-Douglas production function?

This is my first question at Stack Exchange. I am trying to estimate simple Cobb-Douglas production function $Y=AL^{\alpha}K^{\beta}$ on US data and receive an unrealistic estimate of $\alpha$ and a ...
6
votes
1answer
63 views

What type of graph can be hepful to explain the type of errors that should be used?

I have a regression of wage on several variables, such as education, marriage and so on. I want to explain that it would be a better idea to use cluster errors, since we expect the wage to be ...
6
votes
1answer
395 views

Errata for Wooldridge graduate econometrics book

Does anyone know where I can find an errata to the 2nd edition (2010) of «Econometric Analysis of Cross-Section and Panel Data» by Wooldridge? I've tried the accompanying website, but I could not find ...
5
votes
3answers
11k views

What does it mean to make an identification assumption?

Trying to understand this problem: Suppose you had access to a dataset that follows individuals from adolescence throughout adulthood. Each year, you observe earnings, educational attainment, ...
5
votes
2answers
648 views

Dealing with Missing Data when Testing the CAPM

Question How should I deal with missing data when trying to test the CAPM? Specifically, there are some stocks that are newly listed and/or delisted at any time. I don't want to exclude assets for ...
5
votes
2answers
133 views

Research at the county-level: Macro or Micro?

Is research at the county-level considered applied micro or applied micro? The standard undergrad definitions ("micro" = "individual", "macro" = "nation") are of no help with units of measurement ...
5
votes
2answers
373 views

Problems with Representative Sampling

I am curious: what exactly are the problems caused by using representative sampling rather than random sampling whenever creating a subsample of large dataset for nonexperimental analysis. Further, ...
4
votes
2answers
278 views

How do we estimate production functions?

In a standard economics education we learn about production functions, indicating an output as a function of a given input of capital and labour. An average model looks like this: (1) $F(L,K)=L^{...
4
votes
1answer
183 views

Is a hedonic regression a reduced-form?

If house prices are a function of location, physical characteristics and an error term i.e. house_price = f (location, physical, e) And I estimate a regression with the log of house price as my ...
4
votes
1answer
149 views

The Econometrics of the Stone Geary Production function

The Stone-Gerry production function generally takes a form of: $$f(x_{i})=\prod_{i=1}^n(x_{i}-a_{i})^{\gamma_i}$$ where $x_i$ represents all inputs in the model, $a_i$ is a constant representing the ...
4
votes
2answers
543 views

Bayesian vs. Frequentist Approach

I hope this question is not too general in nature; I just wanted to ask the members of this community their opinion on the following question: How can one choose between the Bayesian approach and the ...
4
votes
1answer
768 views

To use seasonally adjusted data or not seasonally adjust data?

Im currently doing research using some macroeconomic data. I just want to know what are the pros and cons of using seasonally adjusted/non-seasonally adjusted data in terms of forecasting.
4
votes
1answer
82 views

Demand function estimation

The model specification is: $$D_{ij} = A + aP_{ij} + bY_{ij} + cN_{ij} + e_{ij}$$ where: $i, j$ = $i$-th year, $j$-th month, $D$= demand (outgoing minutes) $P$ = average price of call, $Y$ = ...
4
votes
1answer
69 views

Controlling for interaction effects

In a recent paper, Edelman et al. examine (amongst other things) how discrimination on AirBnB varies with the characteristics of hosts. First, they conduct a field experiment which involves sending a ...
4
votes
1answer
86 views

Insignificant Interaction effect in applied econometrics (multinomial logit regression)

I'm currently writing my master's thesis where I'm applying a multinomial logit regression with interactions effect. The model I'm using is $$ P(y=j) = exp(xb_j)/(1+∑exp(xb_h)) $$ where $$ xb_j =...
4
votes
0answers
59 views

How to econometrically identify perfect complements in production?

The production $$f(x_i,...,x_n)=\min\{x_i,...,x_n\}$$ is pretty straight forward and usually with smaller size data sets and can usually be picked up on rather quickly in an intuitive sense. ...
4
votes
0answers
72 views

R reproducible example, restrictions on cointegrating equations

The code given below estimates a VEC model with 4 cointegrating vectors. It is a reproducible code, so just copy and paste into your R console (or script editor). ...
3
votes
1answer
674 views

What is a good proxy for government quality?

Is it ok to use corruption as a proxy for government quality?
3
votes
3answers
320 views

Detecting the presence of measurement error

When can I know that I'm in the presence of measurement errors? i.e., when can I know that I should use a measurement error model(error-in-variables model)? Are there any statistical tests for ...
3
votes
1answer
125 views

Papers with insignificant results

There are a few papers that I have seen that publish insiginficant results, such as responses (see Easterly's response published in the AER to Burnside and Dollars World Bank paper titled 'Aid, ...
3
votes
1answer
6k views

How to interpret “scale efficiency” in DEA?

I am reading the book Benchmarking with DEA, SFA, and R by Bogetoft and Otto. In Section 4.8 they discuss the concept of scale efficiency, and I am having trouble interpreting this concept. The ...
3
votes
2answers
249 views

How to detect if Ergodicity, Stationarity and Martingale. dif. sequence are satisfied?

I'm not sure, but I think I've read somewhere that because the Classical Linear Regression model assumes to have a random sample, when researchers think they might not be in presence of a sample with ...
3
votes
1answer
91 views

Synthetic Control Method

I need to study Synthetic Control Method for my term paper. So can anyone suggest some book/literature from where I can study Synthetic Control Method on my own?.
3
votes
1answer
112 views

Consumer Econometrics: Identifying nature of goods

I have some data on household income and goods purchased. The first three columns and rows are: ...
3
votes
2answers
140 views

What is the reason why ARIMA(0,1,0) on $y_t$ and ARIMA(0,0,0) on diff($y_t$) are not identical time-series models?

I studied at BA level, that ARIMA(0,1,0) on $y_t$ and ARIMA(0,0,0) on diff($y_t$) are the same models. I am doing the Box–Jenkins model estimation on the historic data of US unemployment rate. My ...
3
votes
2answers
185 views

Forecasting vs econometrics, how is regression used differently?

I have this homework question: Q: Suppose that a marketing company is seeking to identify customers interested in their product. They regress the number of sales in an area on the average ...
3
votes
2answers
8k views

Two-way clustering in Stata

I have a panel dataset and I would like to estimate a linear equation in a fixed effects framework. My question is: how should I implement a two-way clustering? Stata syntax and/or .ado file necessary ...
3
votes
1answer
101 views

Why can't we control for squares and quadratics of predicted values in regression?

If my goal were prediction (e.g. of propensity scores), why couldn't I control for higher order terms of the model equation? For example, why not estimate the model and then control for squares and ...
3
votes
1answer
64 views

Aggregate production function, factor shares and cointegration

When estimating an aggregate production function you fit your data to a selected functional form of the production function, derive the parameters and inference from there. My question is, is there ...
3
votes
1answer
57 views

When first differences contradict a regular regression regarding Investment vs Output relationship

Im doing some research with some panel data I have on firm output and investment. I ran two equations. $$y=\beta_0+\beta_1x+\beta_2x^2+\mu$$ $$\Delta y=\alpha_0+\Delta\alpha_1x+\epsilon$$ in R ...
3
votes
1answer
77 views

Specifying a Diff-In-Diff with multiple treated groups over multiple years

Suppose I have a group of 100 counties. Further suppose that the state decides to allocate a lump sum amount of money to some counties each year to boost spending on education in that county (until, ...
3
votes
1answer
204 views

How do we estimate utility functions?

Throughout the course load of an economics student's undergrad we are exposed to the concept of cardinal utility via utility functions which give us a specific quantifiable number of "utilis" as a ...
3
votes
0answers
131 views

Structural estimation

My understanding of structural estimation follows the lines beautifully lectured by Christophe Taber (U. of Wisconsin): Identify the policy question to be answered Write down a model that can ...
3
votes
0answers
208 views

Estimation technique: Independent variable (taxation) unknown

I am trying to estimate $\lambda$ from this equation: $(1+ t_t) = \left(\dfrac{C_t}{Y_t}\right)^{\frac{1-\lambda}{\lambda}}$ After taking logs and approximations, I get: $t_t \approx \left( \frac{1-...
2
votes
2answers
126 views

Interpretation of a differenced regression

I'm experimenting with some data in R and I've found that though there is statistical significance between two variables, however their changes are not statistically significant. I first ran a ...
2
votes
2answers
173 views

Macroeconometrics:How to measure capital depreciation?

In an econometric sense, how do macroeconomists measure capital depreciation $\delta$ in the formula $K_{t+1}=K_t(1-\delta)+I_{t+1}$. What data would I need and what kind of regression would I run?
2
votes
2answers
98 views

Interpretation of regression coefficients with and without logs

Say you want to estimate return to education. Model 1 (no log): assume the DGP is: $$w_{i} = \alpha + \beta x_{i} + \zeta_{i} + e_{i}$$ where $x$ is years of schooling, $\zeta_{i}$ is unobserved ...
2
votes
1answer
59 views

When estimating VAR(1) by OLS, I get transpose of AR matrix. Why?

Model: $y_t = \Phi y_{t-1} + (\mathbb{I_n}-\Phi)\mu + \Sigma \varepsilon_t$ s.t. $y_t$ is a $(n \times 1)$ vector, and $\varepsilon_t \sim N(\vec{0},\mathbb{I}_n)$. $\mathbb{I}$ is the identity matrix....
2
votes
1answer
53 views

Group contamination in Regression Discontinuity

I'm an undergraduate student I have an empirical question regarding Regression Discontinuity and Diff-in-Diff methods. I'm currently evaluating the impact on fertility of a Conditional Cash Transfer ...
2
votes
1answer
28 views

Is measurement error in self-reported health a problem in this scenario…?

I am running regressions to estimate the impact of health conditions on life satisfaction. I have read a paper that showed that there is likely to be measurement error in the self-reported health ...
2
votes
1answer
65 views

Minimum sample size for cross-sectional RDD

I haven't done a regression discontinuity design (RDD) before. I know it requires a large sample size for identification, thus I fear that my sample size is not large enough. The study is cross-...