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chl
  • Member for 12 years
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22 Offered bounties for 1,850 reputation

38 votes
2 answers
4k views
+100

Which statistical model is being used in the Pfizer study design for vaccine efficacy?

530 votes
3 answers
401k views
+100

Relationship between SVD and PCA. How to use SVD to perform PCA?

44 votes
1 answer
20k views
+100

PCA and Correspondence analysis in their relation to Biplot

30 votes
2 answers
3k views
+100

Is rejecting the hypothesis using p-value equivalent to hypothesis not belonging to the confidence interval?

283 votes
15 answers
531k views
+200

What is the meaning of p values and t values in statistical tests?

4 votes
0 answers
302 views
+50

Appropriate use of difference adjusted CIs in error bars for mixed ANOVA's time * group interaction

43 votes
2 answers
23k views
+100

Simulation of logistic regression power analysis - designed experiments

39 votes
9 answers
8k views
+200

What is the relationship between $Y$ and $X$ in this plot?

17 votes
3 answers
25k views
+100

Factor analysis of questionnaires composed of Likert items

39 votes
2 answers
19k views
+100

How does Factor Analysis explain the covariance while PCA explains the variance?

19 votes
4 answers
14k views
+50

How to best visualize differences in many proportions across three groups?

92 votes
4 answers
32k views
+50

When to use Fisher and Neyman-Pearson framework?

4 votes
0 answers
191 views
+50

Should I run measurement invariance if confirmatory factor analysis is not affirmative?

30 votes
3 answers
20k views
+50

Cross-validation or bootstrapping to evaluate classification performance?

19 votes
4 answers
2k views
+50

How could one develop a stopping rule in a power analysis of two independent proportions?

9 votes
2 answers
4k views
+50

How to apply multiple testing correction for gene list overlap using R

11 votes
2 answers
31k views
+50

Graphs in regression discontinuity design in "Stata" or "R"

7 votes
1 answer
337 views
+50

Normal distributed random numbers in time - expected behaviour - askew distributions?

34 votes
3 answers
10k views
+50

Propensity score matching after multiple imputation

16 votes
1 answer
13k views
+100

Looking for a step through an example of a factor analysis on dichotomous data (binary variables) using R

21 votes
3 answers
3k views
+50

How to combine confidence intervals for a variance component of a mixed-effects model when using multiple imputation

16 votes
5 answers
5k views
+100

Application of machine learning techniques in small sample clinical studies