Re: [R] {metafor} variance explaination for paired pre-test/posttest

2014-04-08 Thread John Williams
Prof. Viechtbauer, thanks for the articles. I appreciate your help. Yours, John John Williams ALB Candidate, Harvard University (Expected May 2014) johnwilli...@fas.harvard.edu jawilliam...@gmail.com -- View this message in context: http://r.789695.n4.nabble.com/metafor-variance

[R] {metafor} variance explaination for paired pre-test/posttest

2014-04-07 Thread John Williams
'd like to be able to justify it and not redo calculations for 23 studies if possible. Thank you very much, John John Williams ALB Candidate, Harvard University (Expected May 2014) johnwilli...@fas.harvard.edu jawilliam...@gmail.com -- View this message in context: http://r.789695.n4.n

[R] arc length of noisy time series?

2012-01-20 Thread John Williams
Hi, I have data of the form: tx y trip t1x1+e y1+eA t2x2+e y2+eA t3x3+e y3+eB t4x4+e y4+eB t5x5+e y5+eB ... ... ... ... where t is time and

[R] New R-SIG for Discrete Choice Modelling

2010-07-08 Thread John Williams
Hello all, I'd like to announce the availability of a mailing list for a newly-formed SIG (Special Interest Group) dedicated to using R for Discrete Choice Modelling. This list is intended for discussion of issues revolving around the design and analysis of Discrete Choice (aka Stated Choice, St

Re: [R] Re : Design of experiments for Choice-Based Conjoint Analysis (CBC)

2010-06-21 Thread John Williams
On 21/06/10 20:32, Aline Deschamps wrote: Thank you for your mail and the attached documents. You're most welcome :-) I've read the article and I found it very interesting, but I have some questions : - The 5 steps in this article are for creating a choice set for one respondent, are they? Y