Find answers to your questions about Cross Validated or help others by answering their Cross Validated questions.
I have four datasets: morphological measurements for a set of species (M1), ecological measurements for the same set of species (E1), morphological measurements for a second set of species (M2),...
Asked on 02/18/2021 by forlooper
1 answerI want to have a better understanding of the weight-optimization process. I understand the optimizer(e.g., gradient descent) looks for the direction in which to move the parameters to minimize the...
Asked on 02/18/2021 by Borut Flis
1 answerI hope you are all safe and healthy considering the current climate. I was wondering if someone could help with a statistical dilemma I have on my hands. I am...
Asked on 02/17/2021 by Kaaren0111
0 answerShow that for the binomial likelihood $y$ ~$Bin(n, theta)$, $p(theta) propto theta^{-1} (1-theta)^{-1}$ is the uniform prior distribution for the natural parameter of the exponential family. I...
Asked on 02/17/2021 by xxtensionxx
1 answerI want to discretize a continuous variable $X$ into a given number of classes $k$ (assume for simplicity that $k$ is even). Decision trees (and related methods)...
Asked on 02/17/2021 by Aflatoun
1 answerI have yearly data over time (longitudinal data) with repeated measures for many of the subjects. I think I need multilevel modeling/regressions to deal with sure-to-be correlated clusters of measurements...
Asked on 02/17/2021 by exlo
1 answerSay I have some second-order statistic $m(x)$ where $x$ is a data vector of length $n$. Let's also assume that the limiting distribution of $x$ is gaussian-ish, but generally unknown,...
Asked on 02/17/2021
1 answerI collected data from 50 patients at 3 different time points and performed analysis using 3 different methods. What would be a more appropriate test to compare the measurements between...
Asked on 02/16/2021 by Xe M
1 answerWhat is the exact formula used in R lm() for the Adjusted R-squared? How can I interpret it?Adjusted r-squared formulasThere seem to exist several formulas to calculate Adjusted R-squared. Wherry’s...
Asked on 02/16/2021 by user1272262
2 answerWe use 2**p model variations in order to define best model in subset selection. In contrary, we use 1 + p(p+1)/2 models in forward selection. But in the book it...
Asked on 02/16/2021 by Davud Mursalov
0 answerGet help from others!
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