Jake Westfall

Austin, TX

http://jakewestfall.org

Former quantitative psychologist now working in data science/analytics.

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Variance of $K$-fold cross-validation estimates as $f(K)$: what is the role of "stability"?

regression machine-learning variance cross-validation predictive-models asked May 20, 2017 at 1:11

stats.stackexchange.com

30 votes

Why maximum likelihood and not expected likelihood?

probability mathematical-statistics maximum-likelihood optimization expected-value asked Apr 1, 2014 at 6:39

stats.stackexchange.com

26 votes

Soliciting pre-submission manuscript comments from people who could later be peer reviewers

publishing journals peer-review paper-submission asked Dec 18, 2013 at 6:54

academia.stackexchange.com

22 votes

Latent variable interpretation of generalized linear models (GLMs)

logistic generalized-linear-model poisson-regression probit latent-variable asked Sep 23, 2016 at 22:14

stats.stackexchange.com

17 votes

What stimulus features determine the psychophysical power law exponent?

perception sensation psychophysics asked Oct 14, 2012 at 21:34

psychology.stackexchange.com

12 votes

testing logistic regression coefficients using $t$ and residual deviance degrees of freedom

r logistic mathematical-statistics sas degrees-of-freedom asked Aug 18, 2014 at 0:06

stats.stackexchange.com

7 votes

Relative variances of higher-order vs. lower-order random terms in mixed models

mixed-model variance references multilevel-analysis random-effects-model asked Oct 15, 2013 at 8:21

stats.stackexchange.com

5 votes

Get correlation matrix of 3 variables from any combination of 3 simples/partials

correlation multivariate-analysis partial-correlation asked Oct 29, 2014 at 22:54

stats.stackexchange.com

Top Answers

What are the worst (commonly adopted) ideas/principles in statistics?

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Maximum Likelihood Estimation (MLE) in layman terms

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Confused about independent probabilities. If a fair coin is flipped 5 times, P(HHHHH) = 0.03125, but P(H | HHHH) = 0.5

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Big disagreement in the slope estimate when groups are treated as random vs. fixed in a mixed model

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Why is the marginal distribution/marginal probability described as "marginal"?

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Showing that 100 measurements for 5 subjects provide much less information than 5 measurements for 100 subjects

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Why does treatment coding result in a correlation between random slope and intercept?

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Suppression effect in regression: definition and visual explanation/depiction

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What is the upside of treating a factor as random in a mixed model?

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Why does statsmodels.api.OLS over-report the r-squared value?

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Why do I get zero variance of a random effect in my mixed model, despite some variation in the data?

stats.stackexchange.com

In math/stats terminology, $1/p$ is the reciprocal of $p$. So what is $1-p$ called, if anything?

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What is the lme4::lmer equivalent of a three-way repeated measures ANOVA?

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Regression: why test normality of overall residuals, instead of residuals conditional on $\hat{y}$?

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How to create a ribbon plot?

stackoverflow.com

Equivalence between a repeated measures anova model and a mixed model: lmer vs lme, and compound symmetry

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Is R's glm function useless in a big data / machine learning setting?

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z-score and Normal Distribution

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How to partition the variance explained at group level and at individual level?

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Intraclass Correlation Coefficient in mixed model with random slopes

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What does pooled variance "actually" mean?

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Adding random effect influences coefficient estimates

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Does $r$-squared have a $p$-value?

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Is up- or down-sampling imbalanced data actually that effective? Why?

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What is the name of the cognitive bias where an expert overestimates the knowledge of others?

psychology.stackexchange.com

Relationships between correlation and causation

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Mixed effects model: Compare random variance component across levels of a grouping variable

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Difference between XGBRegressor and XGBClassifier

datascience.stackexchange.com

Can I probe cross-level interactions without random slope in a hierarchical linear model?

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Regressing out a variable?

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