Tuesday, March 03, 2009

Are you taking the P? P-values versus t-values: the “sting in the tail”





2 Comments:

Blogger Lun said...

Hey!
I'm a Year 3 student who are taking Econometrics now. However, I really confused about the concept of "degree of freedom", which is totally different from what I learnt in Stastics (I think). Could you give me any ideas or hints?

My email is
zliyccl3@nottingham.edu.cn

Could you write to me?
Thank you very much for your time!

BR,
Bonnie

10:50 PM  
Blogger shruti said...

hi,
I really appreciate this write up on p-values versus t-values. However what I can infer from the same is that ultimately in both the tests (one tailed and two-tailed) we end up rejecting the Null. Basically my question is to what extent can we change our results (instead of rejecting accept null ) simply by having some apriori information/ Or undertaking one tailed test instead of two?

9:46 PM  

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