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Ray Koopman
  • Member for 9 years, 6 months
  • Last seen more than 8 years ago
27 votes

Why could centering independent variables change the main effects with moderation?

20 votes

What does the inverse of covariance matrix say about data? (Intuitively)

8 votes

Calculate uncertainty of linear regression slope based on data uncertainty

7 votes

Is chi-squared always a one-sided test?

7 votes

Variance and covariance of binary data

6 votes

What if interaction wipes out my direct effects in regression?

6 votes
Accepted

How to report the ratio of two sets of experimental results?

6 votes
Accepted

Spherical platykurtic random cloud

5 votes
Accepted

How can I sample from a correlated multivariate Bernoulli distribution with known covariances?

5 votes

Smooth a circular/periodic time series

5 votes

Are there useful applications of SVD that use only the smallest singular values?

4 votes

Generate three random numbers that sum to 1 in R

4 votes

How to display error bars for cross-over (paired) experiments

4 votes
Accepted

How to report result from two-way repeated measures ANOVA?

4 votes

Spherical platykurtic random cloud

4 votes

Calculating and using factor scores

4 votes
Accepted

Rank-sum test and conditional probability

3 votes

Value that increases the Standard Deviation

3 votes

Fitting lower-order interactions with higher order main effects

3 votes

Hidden extrapolations in linear regression

3 votes

How high must logistic covariates' predictive accuracy be for a reversal effect to show up?

3 votes

Cronbach's alpha vs. KR20/KR21 in reliability studies

3 votes
Accepted

Computing a circular-linear partial correlation

2 votes
Accepted

Transforming data for chi square -- squaring negative value difference scores?

2 votes

Alternative to the t-test with dependent samples

2 votes

What is the reasoning behind the formulae for the different standard errors of measurement?

2 votes

What determines to which variable the explained variance is granted?

2 votes

Measure of dispersion over unordered set

2 votes
Accepted

compare binary responses with ties

2 votes

Comparison of two Simpson indices using t-test