Answer Recent Asked Questions on TransWikia.com ~ Page 2

How do i draw a ray in unity

So i am trying to scrap together something for vr in which the locomotion is about the player holding the direction where he wants to go to(basically planning what he...

Game Development Asked by Levent on 2 years ago

How to test consistency of responses?

I am analyzing data from several trials where individuals were submitted to different stimuli and a biological response was measured. Some individuals participated in more than one trial where the...

Cross Validated Asked by user4451922 on 2 years ago

How can I understand these variograms?

Using grf function from R package geoR, I simulated 6 replicates (each with 1000 samples) of a Gaussian random field on [0, 1] x [0, 1], with zero mean, zero...

Cross Validated Asked by Zheyuan Li on 2 years ago

Trying to wrap my arms around copulas

This topic is dense with notation that makes things a bit confusing. But is this the correct interpretation? Suppose we have two jointly distributed random variables – $X$ ...

Cross Validated Asked by eSurfsnake on 2 years ago

Justification for and optimality of $R^2_{adj.}$ as a model selection criterion

In a recent thread, use of adjusted $R^2$ ($R^2_{adj.}$) is mentioned in the context of model selection, e.g. The adjustment was invented as a solution to problems...

Cross Validated Asked on 2 years ago

How to interpret results of mixed longitudinal model in R?

So I'm not too familiar with mixed models, but wondering about the following:library(reshape2)library(lme4)library(lmerTest)#Simulate longitudinal dataN <- 25t <- 2x <-...

Cross Validated Asked by lazylarry on 2 years ago

$E(xy)<infty$ proof

I am reviewing the best linear projection properties proof in Hansen's book on econometrics. Specifically, the proof according to which $E(xy)<infty$. For this, it is assumed that $E(y^2)<infty$...

Cross Validated Asked on 2 years ago

Calculating eigen values from principal components and deciding on the number of principal components?

I calculated PCs for my samples and I am showing here data frame that has samples as my rows and PCs as my columns. My question is in order to...

Cross Validated Asked on 2 years ago

Why should this result be true? If $f: [0,1] to mathbb{R}$ is differentiable, $g$ is continuous, and $f'(t) = g(f(t)),$ then $f$ is monotonic.

If $f: [0,1] to mathbb{R}$ is differentiable, $g$ is continuous, and$f'(t) = g(f(t)),$ then $f$ is monotonic.Example 1: Suppose $g(x) = x Rightarrow f'...

Mathematics Asked on 2 years ago

Evaluate $int_0^1frac{mathrm{e}^{12x}-mathrm{e}^{-12x}}{mathrm{e}^{12x}+mathrm{e}^{-12x}},mathrm{d}x$

My work so far $${displaystyleint_0^1}dfrac{mathrm{e}^{12x}-mathrm{e}^{-12x}}{mathrm{e}^{12x}+mathrm{e}^{-12x}},mathrm{d}x$$ using substitution with $u=mathrm{e}^{12x}+mathrm{e}^{-12x}$ $$={displaystyleint}dfrac{1}{12u},mathrm{d}u$$ $$=class{steps-node}{cssId{steps-node-1}{dfrac{1}{12}}}{displaystyleint}dfrac{1}{u},mathrm{d}u$$ $${displaystyleint}dfrac{1}{u},mathrm{d}u$$ which is the standard integral: $$=lnleft(uright)$$ $$=dfrac{lnleft(uright)}{12}$$ and using substitution with...

Mathematics Asked on 2 years ago

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