Questions tagged [statistics]

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Interpretation of regression output for different models

I am quite new to econometrics, hence, not very familiar with interpreting regression outputs. To me, the resources I've found online are quite confusing and cannot give me some practical guidance in ...
25 views

Adding a subscripts for P (price) in equation

I made the following equation for a hedonic model. When I sent it to my teacher to check if it was fine, she told me that I should add subscripts for P so that we know by what it varies. I don't get ...
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29 views

Sample size invariance of inequality measures

I am not an expert on inequality, so decided to drop this question. Suppose I analyze inequality of an outcome among different groups with Gini coefficient, I know that the scale of the outcome wouldn'...
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1 vote
41 views

WLS or Feasible GLS?

For a question like this, would I use WLS or Feasible GLS? I am leaning towards WLS but my lecture slides tell me GLS is used when there is more than one variable that drives the residual variance.
61 views

Functional form for regression in a hedonic pricing model

I am doing a regression where I use the hedonic pricing model. Hedonic pricing treats a marketed good, usually a house, as a sum of individual goods (characteristics or attributes) that cannot be sold ...
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60 views

consistency and unbiasedness of ols estimator

Please explain why the OLS estimator is consistent and unbiased withregard to the equation below $$\label{eq:1} C_{t} = \beta_{1} + \lambda C_{t-1} + \epsilon_{t}$$
40 views

error specification of OLS regression models

Consider the following regression equation * $$\label{eq:1} C_{t} = \beta_{1} + \lambda C_{t-1} + \epsilon_{t}$$ and let \label{eq:3} \epsilon_{t} = \rho\...
1 vote
45 views

lagged regression equation properties

consider this equation 1: $$\label{eq:1} C_{t} = \beta_{1} + \lambda C_{t-1} + \epsilon_{t}$$ If the error term is independently and identically distributed (iid) with ...
32 views

Difference between M-estimators and Minimum Distance estimators

I was reading Chapter 22 of Hansen's Econometrics on M-estimators and he lists OLS, Non-linear LS and Maximum Likelihood as examples of M estimators. After a few paragraphs, he also writes "[...] ...
1 vote
27 views

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85 views

A Gamma-Weibull distribution for empirical auction model

I am reading Comparing Open and Sealed Bid Auctions: Evidence From Timber Auctions (working paper version) and struggling with getting a log likelihood function about a Gamma-Weibull distribution. In ...
• 195
81 views

How to deal with multiplicatively constant and additively constant fixed effects?

From Nick Huntington-Klein, The Effect: Fixed effects is a method of controlling for all variables, whether they’re observed or not, as long as they stay constant within some larger category. How can ...
• 216
59 views

Discrepancies of average/median net worth versus home values in USA?

I got a semi-interesting question, I think. Why are there big discrepancies between the average vs median net worth (USA), 746,820 vs 121,760, and the average vs median home values, 453,300 vs 404,...
• 5
32 views

How to find the probability that the sample variance (given in the question below) is this low/lower when given the true population variance?

I'm not sure how to answer the question below. I have gone through worked examples and I have the answer for this question as well. However, the answer doesn't really provide any working. There are ...
1 vote
58 views

Utility of both players in St. Petersbourg paradox - behavioural economics

Im reading a paper by Karl Menger [1] about the St. Peterbourg paradox : In the theory of probability, the "Petersburg Game" designates the follow- ing gamei between two persons, A and B. ...
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44 views

Computing an Exponential Moving Average

According to the Wikipedia page on moving averages, "This is also why sometimes an EMA is referred to as an $N$-day EMA. Despite the name suggesting there are $N$ periods, the terminology only ...
36 views

How to determine ADF test criterion?

I tried ADF test and there are 3 criterions. intercept intercept and trend none I usually decide the criterion after looking at the graph. (For example, if the data is around 0 then choose intercept,...
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50 views

Clustering Standard Errors for Panel Data with multiple clusters

I have a Group-Firm-Year panel data set (i.e., multiple firms make up a group). Suppose I have exogenous variation at the group level over time. In a panel regression with firm and time fixed effects ...
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1 vote
21 views

Unemployment data - registered unemployed > ILO defined unemplyment

I have noticed that in Poland the rate of registered unemployed is higher than the "unemployement" rate. Here are the stats from the Polish regime (by month): Source: https://stat.gov.pl/en/...
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51 views

full rank left annihilator matrix

Suppose I have a matrix A= g=[Vfc/(x1Cdc),x4/(x1Cdc),-x3/Cdc;0 0 0;0 0 x1/Lcpl;0 -1/Cb 0] and I want to find the full rank left annihilator matrix B such that B*A=0. I am using MATLAB.
1 vote
111 views

What's the highest percentage of output any country spent on its military?

I was surprised that in 1941: American military spending accounted for 2 per cent of it's national output. Compared to Japan's 70 per cent. 70% seems incredibly high, especially given people still ...
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38 views

What are the values in brackets under the estimators value representing?

Please, can you explain me what are these values in red circles representing?
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71 views

1 vote
35 views

Maximum of conditional expectation

I have a statistics question for the insider problem in the Kyle (1985) model: How does one go from $\max\limits_{X} E[(v-\bar{v}-\lambda(X+u))X|v]$ to $\max\limits_{X} (v-\bar{v}-\lambda X)X$ ?
75 views

Difference-inDifference model with Discontinued Treatment

I have a situation where I observe two groups A and B for three years. Group A never received any treatment. Whereas group B received treatment in year 2 only. I can estimate the impact of the ...
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1 vote
18 views

Is more opium produced legally or illegally?

I've had a hard time finding statistics on legal and illegal opium poppy production. At the UNODC we find facts like: global [illicit] opium production fell by almost 30%, to less than 5,000 tons in ...
• 111
63 views

Joint significance test in a difference-in-differences setting

I ran the following difference-in-differences regression in software and have some questions about the interpretation of the resulting coefficients and their (joint) significance:  P_{it} = \gamma_i ...
22 views

rebasing an index with inconsistent ratios between old and new data points?

I have a question about rebasing indices, hoping someone might be able to help. I'm working with two sets of index data for residential property prices from the Australian Bureau of Statistics. the ...
93 views

How to interpret fixed effects?

I want to interpret the output of a fixed effects regression and need help with interpreting the country-fixed effects. The regression is the following: ...
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1 vote
304 views

Does random sampling cause zero conditional mean?

In the lecture notes of my development economics class, it says that " In the regression model : Yi = β0 + β1Xi + ui, if Xi is randomly assigned, then Xi is independent of ui, i.e., E(ui|Xi) = 0, ...
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1 vote