On 17/02/2012, at 2:53 AM, Derek M Jones wrote: > You can find mine here (only the 2011 experiment has all the code > needed to perform the analysis; I'm working on fixing that): > http://www.knosof.co.uk/dev-experiment.html
This is a wonderful thing you have done. I note that these days, when I see a lot of subjects (well, 30) with a bunch of discrete attributes, correspondence analysis is one of the things I reach for to get some insight. There's the corresp() function in library(MASS) and Fionn Murtagh's code to go with his correspondence analysis book is available over the web. While playing with the data, I was struck by two prominent lines I kept seeing: table(loc_written) 0 1 2 3 4 5 6 7 2 3 3 8 1 7 3 3 ^ ^ I don't suppose it has any significance at all for your results, but I wonder why the loc_written data were so clumpy. -- The Open University is incorporated by Royal Charter (RC 000391), an exempt charity in England & Wales and a charity registered in Scotland (SC 038302).