I don't think so. But provide more info on your data (how is it set up? what level vars?) and the exact test you want to perform.1- i want to apply z test for mean different between two kind of funds,, my data have 139 observations,, and i don't know what option should i choose for z test ,, my teacher said that spss automatically transform t test to z test if data more than 30 ,, is it true ?
It is extremely easy to calculate a new p-value that is one tailed, google it2- i need to test for one tail but spss dont have option for that ,,, how can do z test for mean different for one tail?
I think you need a t-test. what do you want to do with z-test?tarox wrote: so do spss transform the t test to z or there is some way i could use z test
+ did you mean after the result show should i dividing the p-value by two?
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