[R] Choosing statistical test - Fisher's Exact Test?
Vito Muggeo (UniPa)
vito.muggeo at unipa.it
Tue Jan 18 15:18:53 CET 2011
It appears that you have a 2x2 table coming from paired binary data..
If this is the case the McNemar test is appropriate.
or even better the package exact2x2, function mcnemar.exact() for an
Il 18/01/2011 14.40, debz ha scritto:
> Hi I was wondering whether anyone can help me with this problem....it's been
> driving me nuts, I've been trying to figure it out for months and months
> without success!! Basically I have a group of participants who attended 2
> experimental sessions a few months apart. I took measures of the way they
> approach two tasks at Time 1 and the same two tasks at Time 2. I have
> categorical data (a frequency table for each task) consisting of the goal
> profiles that participants adopted at Time 1 and at Time 2. I would like to
> test whether there is a significant difference between the goal profiles
> that participants adopted at Time 1 and Time 2. Is Fisher's exact test the
> test to use in this case?
> I would really really appreciate any help!!
Vito M.R. Muggeo
Dip.to Sc Statist e Matem `Vianelli'
Università di Palermo
viale delle Scienze, edificio 13
90128 Palermo - ITALY
tel: 091 23895240
fax: 091 485726/485612
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