[Rasch] Mean diferences and measurement error
Andrés Burga León
21781 at upch.edu.pe
Sun Jun 3 01:58:47 EST 2007
Hello to everybody on the list:
I was thinking about this subject and I want to know your opinions:
In every statistical test, you found that if you want to assess mean
differences you could use a simple t test: (mean1 mean 2) / standard
error. But this formula only considers the sampling error. It assumes
What about the measurement error? Why didnt consider it in the assessment
of mean differences. Im not expert in this subject, but could it be
possible to made a linear composite of sampling error and measurement error?
I mean something like sqrt(sampling error^2 + measurement error^2) and so
assess better mean groups differences?
Mg. Andrés Burga León
Facultad de Psicología
Universidad Peruana Cayetano Heredia
Teléfono: 242 - 8191
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the Rasch