An analysis of the Stackoverflow Beta sites

November 1, 2010 | csgillespie

In the last six months or so, the behemoth of Q & A sites stackoverflow, decided to change tack and launch a number of other non-computing-language sites. To launch a site in the stackoverflow family, sites have to spend time gathering followers in Area51. Once a site has gained a critical ... [Read more...]

Correlation scatter-plot matrix for ordered-categorical data

April 7, 2010 | Tal Galili

When analyzing a questionnaire, one often wants to view the correlation between two or more Likert questionnaire item’s (for example: two ordered categorical vectors ranging from 1 to 5). When dealing with several such Likert variable’s, a clear presentation of all the pairwise relation’s between our variable can be ...
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R Flashmob

September 4, 2009 | Tal Galili

Today I noticed a call for R users to gather around a single campfire for one hour and share their questions and answers. The campfire name is, a site dedicated for handling programming questions. The event details are bellow: From: ...
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