Drexel dragonThe Math ForumDonate to the Math Forum



Search All of the Math Forum:

Views expressed in these public forums are not endorsed by Drexel University or The Math Forum.


Math Forum » Discussions » sci.math.* » sci.stat.math.independent

Topic: Two nick-picks concerning Significance Tests
Replies: 5   Last Post: Jun 22, 2012 10:41 AM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]
Luis A. Afonso

Posts: 4,617
From: LIsbon (Portugal)
Registered: 2/16/05
Two nick-picks concerning Significance Tests
Posted: Jun 18, 2012 4:21 AM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

Two nick-picks concerning Significance Tests


As I?d showed by simulation the test statistics p-values are uniformly distributed only when the respective null hypotheses is EXACTLY TRUE. By other words, it is not ENOUGH at all the no-rejection decision to assure uniform p-values: if we not hit the *bull?s eye* they tend strongly to be smaller than for true H0, therefore one does find *anomalous* higher proportion of the p< alpha condition.
******
By other hand the usual *technical jargon* there is no difference (on means, on variations, on correlation coefficients, etc.) is advisable to be banned for didactic/teaching purposes, exactly because it fatally suggests (wrongly) that one can ever to state equality by means of significance tests. This interpretive error I was able to found here.

Luis A. Afonso



Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© Drexel University 1994-2014. All Rights Reserved.
The Math Forum is a research and educational enterprise of the Drexel University School of Education.