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Alecos Papadopoulos's user avatar
Alecos Papadopoulos's user avatar
Alecos Papadopoulos's user avatar
Alecos Papadopoulos
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PhD in Economics with a heavy dose of, and a not-so-secret love for, Econometrics and Statistics. The PhD thesis is a monograph on the Two-tier Stochastic Frontier model/framework, "The Two-tier Stochastic Frontier (2TSF) framework: Theory and Applications, Models and Tools".

https://alecospapadopoulos.wordpress.com/

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70
Why the sum of residuals equals 0 when we do a sample regression by OLS?
Sep 17, 2013
52
how to derive the mean and variance of a Gaussian Random variable?
Oct 9, 2013
39
Identity for simple 1D random walk
Jan 8, 2014
30
Derivation of the density function of student t-distribution from this big integral.
Aug 31, 2013
17
How to prove $\int_0^1\tan^{-1}\left[\frac{\tanh^{-1}x-\tan^{-1}x}{\pi+\tanh^{-1}x-\tan^{-1}x}\right]\frac{dx}{x}=\frac{\pi}{8}\ln\frac{\pi^2}{8}?$
Dec 9, 2013
16
Non-zero Conditional Differential Entropy between a random variable and a function of it
Jul 28, 2013
14
Why would I use Bayes' Theorem if I can directly compute the posterior probability?
Aug 30, 2013
12
What is the difference between a random vector and a stochastic process?
Nov 17, 2013
12
Why the expected value of the error when doing regression by OLS is 0?
Sep 18, 2013
10
Can the maximum likelihood estimator be unbiased and fail to achieve Cramer-Rao lower bound?
May 26, 2014
Top Meta posts
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Is it OK to answer a question with a higher level of mathematics than I expect the OP to know?
4
Should full solutions be given (indiscriminately of the question being homework or not)?
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152
Subscript notation in expectations
143
Mutual information versus correlation
74
Dealing with a PhD student reneging on an agreement to appear in social media
64
A generalization of the Law of Iterated Expectations
61
Please explain the waiting paradox