How do I account for twins in statistical analysis? By 'twins' I mean two people born at the same time, rather than any unknown-to-me technical meaning for the word 'twins' in statistics. [more inside]
posted on Sep 18, 2007 - 14 answers

StatisticsFilter: What is the easiest way to estimate parameters of a mixture model consisting of two normal distributions? [more inside]
posted on Aug 27, 2007 - 7 answers

I need a good resource for conducting statistical tests. I've taken stats courses, but it's been a while. Something SPSS-centric would be ideal... [more inside]
posted on Nov 29, 2006 - 4 answers

SPSS is fine but produces offensively ugly figures. R has nice, clean output but is otherwise inscrutable. Statistica is, alas, Windows-only. Mathematica isn't really it, either. What statistics package should I use for OS X? [more inside]
posted on Mar 17, 2006 - 21 answers

I have an SPSS question about linear vs. curvilinear models [more inside]
posted on Jul 27, 2005 - 2 answers

Statisticsfilter: I need help figuring out how to pound a regression model into submission. [more inside]
posted on Apr 1, 2005 - 9 answers