Hi Vito

Thank you so much for your help I really appreciate it! I have a 4x4 table
for one task and a 4x3 Table for the second task.

Thanks


Debbie

On Tue, Jan 18, 2011 at 2:18 PM, Vito Muggeo (UniPa)
<vito.muggeo@unipa.it>wrote:

> It appears that you have a 2x2 table coming from paired binary data..
>
> If this is the case the McNemar test is appropriate.
> See
> ?mcnemar.test
>
> or even better the package exact2x2, function mcnemar.exact() for an
> "exact" approach,
>
> vito
>
>
>
>
> 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!!
>>
>> Thanks
>>
>>
>> Debbie
>>
>
> --
> ====================================
> 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
> http://dssm.unipa.it/vmuggeo
> ====================================
>

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