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mpiktas's user avatar
mpiktas's user avatar
mpiktas
  • Member for 13 years, 7 months
  • Last seen more than a month ago
143 votes
Accepted

How to summarize data by group in R?

114 votes

Why does a time series have to be stationary?

112 votes
Accepted

KL divergence between two univariate Gaussians

95 votes

What is a complete list of the usual assumptions for linear regression?

63 votes

Is Facebook coming to an end?

52 votes

Covariance and independence?

46 votes
Accepted

Does correlation assume stationarity of data?

44 votes

Understanding regressions - the role of the model

42 votes
Accepted

Variance of a function of one random variable

36 votes

Can principal component analysis be applied to datasets containing a mix of continuous and categorical variables?

34 votes

Is there any *mathematical* basis for the Bayesian vs frequentist debate?

31 votes
Accepted

Article about misuse of statistical method in NYTimes

30 votes
Accepted

What is the meaning of the "." (dot) in R?

29 votes
Accepted

Difference between panel data & mixed model

28 votes

Estimating a distribution based on three percentiles

28 votes

How to calculate the p-value of parameters for ARIMA model in R?

27 votes
Accepted

Filtering a dataframe

26 votes
Accepted

Lagging over a grouped time series

25 votes
Accepted

Why use vector error correction model?

24 votes

What are the major philosophical, methodological, and terminological differences between econometrics and other statistical fields?

24 votes
Accepted

How to calculate Zipf's law coefficient from a set of top frequencies?

23 votes
Accepted

Simulation of ARIMA (1,1,0) series

23 votes
Accepted

What is the expected correlation between residual and the dependent variable?

23 votes

Is the R language reliable for the field of economics?

23 votes

Produce a list of variable name in a for loop, then assign values to them

22 votes
Accepted

Caret re-sampling methods

21 votes
Accepted

Singular gradient error in nls with correct starting values

21 votes
Accepted

Correlation of log-normal random variables

19 votes

Forecasting time series regression in R using lm and lag

18 votes
Accepted

Distribution of a second degree polynomial of a Gaussian random variable

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