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Ray Koopman

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

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  • Member for 7 years, 5 months
  • 373 profile views
  • Last seen Dec 23 '13 at 20:36

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23 Why could centering independent variables change the main effects with moderation? Jul 29 '13
18 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
7 Is chi-squared always a one-sided test? Sep 11 '13
6 Variance and covariance of binary data Aug 13 '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 Smooth a circular/periodic time series Aug 28 '13
5 What if interaction wipes out my direct effects in regression? Oct 10 '13
5 Are there useful applications of SVD that use only the smallest singular values? Jul 19 '13
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