Sample size determination

Posted by Maguin, Eugene on Jan 16, 2007; 3:26pm
URL: http://spssx-discussion.165.s1.nabble.com/no-subject-tp1073249p1073250.html

Muyiwa,

You simply have to provide more information. And, with respect, I suggest
that you do some reading on statistical power. Please respond to the list as
I may not have time to help you with what you are wanting.

Tell us: 1) what statistical test are you talking about. T-test? Chi square?
Correlation? What is your alternative hypothesis, that is, if you were doing
a correlation, what is the size of the correlation that you want to be
confident of being able to find? This value should be stated in effect size
terms. How confident you want to be of being able to find an effect of that
size. The usual value of social science research is 80%.

Gene Maguin