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Jake Westfall
  • Member for 10 years, 10 months
  • Last seen this week
40 votes

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

39 votes

Maximum Likelihood Estimation (MLE) in layman terms

37 votes

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

35 votes
Accepted

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

29 votes
Accepted

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

26 votes
Accepted

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

25 votes
Accepted

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

21 votes
Accepted

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

20 votes

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

20 votes

Suppression effect in regression: definition and visual explanation/depiction

20 votes
Accepted

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

19 votes
Accepted

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

18 votes
Accepted

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

18 votes
Accepted

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

16 votes
Accepted

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

15 votes
Accepted

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

15 votes
Accepted

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

15 votes

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

14 votes

z-score and Normal Distribution

14 votes
Accepted

What does pooled variance "actually" mean?

13 votes
Accepted

Intraclass Correlation Coefficient in mixed model with random slopes

13 votes

Adding random effect influences coefficient estimates

12 votes
Accepted

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

12 votes
Accepted

Regressing out a variable?

12 votes
Accepted

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

12 votes

Relationships between correlation and causation

11 votes
Accepted

Is there a rule of thumb for using standard deviation of k-fold cross-validation scores to pick the best model?

11 votes
Accepted

Design of matrix of contrasts in R

11 votes
Accepted

Unpaired repeated measures data

10 votes

How is the Spearman-Brown prophecy formula affected by questions of differing difficulties?