Cross Validated Questions, Problems & Solutions : TransWikia.com ~ Page 20

How do I measure impact of an intervention of time series without historical data of the same series?

I'm trying to evaluate the impact of an intervention in the most statistically accurate way possible but I'm having a hard time figuring out a way measure incremental growth along...

Asked on 12/11/2021 by pheno

1 answer

How do zeroes impact regression estimates?

Assume I am estimating a simple cross-sectional regression model. What happens if a large portion of the cross sections consists of zeros only? That is, both the dependent and the...

Asked on 12/11/2021

1 answer

Can adding a random intercept change the fixed effect estimates in a regression model?

I am trying to understand how mixed models work. I have heard people say that adding random effects does not change the effect estimates of the fixed effects. However, I...

Asked on 12/11/2021

1 answer

How to derive this proportional conditional probability

In the book Bayesian Data Analysis 3rd edition by Gelman et al., the solution for task 3.15 on time series data involves the following expression: $$p(y_t|y_{t-1})p(y_{t+1}|y_t) propto p(y_t|y_{t-1}, y_{t+1})$$...

Asked on 12/11/2021

1 answer

What kind of regression model would best suit this scenario?

I'm new to statistics so this may seem an obvious question for you guys.I have created a survey to collate peoples opinions on how U.S anti-money laundering regulation has...

Asked on 12/11/2021

1 answer

calling scores "changing" NMDS values from envfit() and R2 and P values

I have been following the excellent guide: NMDS ordination in R I wish to use the envfit function to see which of my environmental parameters correlate with...

Asked on 12/11/2021

1 answer

How to calculate log likelihood for a model which outputs log probability?

I am trying to compare some different models, some of them take samples and some of them make a single prediction. I have a reference here https://github.com/yaringal/ConcreteDropout/blob/master/concrete-dropout-keras.ipynb...

Asked on 12/11/2021 by Joff

0 answer

Hypothesis testing on cointegration vector

I am studying cointegration theory in time series using online resources. As per https://www.econometrics-with-r.org/16-2-ooiatdfglsurt.html DF-GLS test is implemented in the package urca can be used to test...

Asked on 12/11/2021 by Meenakshi S

0 answer

How to decide between individual versus group level random effect

I have N participants each has inconsistent number of repeated measurements of an outcome Y. Each participant belongs to one of two groups. My hypothesis is that the levels of...

Asked on 12/11/2021

1 answer

Binary Classification with almost no positives

I have a dataset with 121 features and 7176 data points. Only 11 of these are positive, the rest is negative. If I want to train a SVM on this...

Asked on 12/11/2021 by EpsilonDelta

1 answer

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