Cross Validated Questions, Problems & Solutions : TransWikia.com ~ Page 67

How to determine relationship categorical and numerical data

I have two data frames and I would like to determine correlation or another type of relationship between them. The first data frame is consumption of soft drinks weekly (in...

Asked on 01/09/2021 by onhalu

1 answer

Multiple Poisson regression (?) in R

My data consists of 1 dependent variable and 4 independent variables, all the IV's are continuous.Some of my data is presented below to give an idea of how it...

Asked on 01/09/2021 by Jonas8

2 answer

Propose a model for this time series

I'm analyzing the time series DAX (I call Z) from the dataset EuStockMarket. Could you please verify if my analysis makes sense? Thank you so much for your help!First, I...

Asked on 01/08/2021 by LE Anh Dung

1 answer

Would a 3D CNN require less training samples than a corresponding 2D CNN?

I'm working with a problem where I only have several hundred training samples. That already sounds absurdly low, but I'm thinking:The relevant details for the problem are local patches within...

Asked on 01/08/2021 by Alexander Soare

0 answer

Can regression to the mean be corrected by linear mixed effects?

I am wondering if regression to the mean can be corrected by using linear mixed effects models in the following case.model1 = lme(fixed = fat ~ visit +...

Asked on 01/08/2021 by Lili

0 answer

T value vs T-stat

I've seen this term "t value" floating around, but I never understood what it is. Is it just a different way to say "t-stat," which is analogous to a Z-score,...

Asked on 01/08/2021 by student010101

1 answer

How can I perform a two-sample multivariate t-test where one group is a subset of the other?

Is it possible to compare two means (ideally multivariate) where one comes from a group that is the subset of the other group? E.g. the first group consists of A,...

Asked on 01/07/2021 by Grint

0 answer

Minimize the limit of K-L (Kullback Leibler) divergence for a given conditional probability $p(y|x)$ distribution?

Let, $p(x);p(y)$ are the probability distribution function of random variable $X$, $Y$ and the Conditional probability $p(y|x)$ is given e.g. $p(y|x)=Q(x+2y)$. where, $Q(x) =...

Asked on 01/07/2021

0 answer

Can I use coefficients of one set of regressions as dependent variable in a new regression?

Let's take CAPM model in finance as an example. I have stock prices of $N$ different companies. First, I do regression below and obtain betas of each company ...

Asked on 01/07/2021 by Jeremy

1 answer

What's a word meaning "drawn from the same distribution"?

I'm comparing results from ensemble data assimilation experiments where prior ensemble members are either drawn from the same (multivariate Gaussian) distribution as a "true" variable, or from a different one....

Asked on 01/06/2021 by gKhagb

0 answer

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