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Ray Koopman

Apparently, this user prefers to keep an air of mystery about them.

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  • Member for 6 years, 10 months
  • 360 profile views
  • Last seen Dec 23 '13 at 20:36

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Top posts (54) All Questions Answers | Votes Newest

23 Why could centering independent variables change the main effects with moderation? Jul 29 '13
17 What does the inverse of covariance matrix say about data? (Intuitively) Oct 22 '13
8 Calculate uncertainty of linear regression slope based on data uncertainty Oct 4 '13
6 How to report the ratio of two sets of experimental results? Nov 29 '13
5 Spherical platykurtic random cloud Dec 21 '13
5 Is chi-squared always a one-sided test? Sep 11 '13
5 What if interaction wipes out my direct effects in regression? Oct 10 '13
5 Variance and covariance of binary data Aug 13 '13
5 Smooth a circular/periodic time series Aug 28 '13
5 Are there useful applications of SVD that use only the smallest singular values? Jul 19 '13
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