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Topic: No-Null HST . . .
Replies: 9   Last Post: Feb 20, 2013 3:31 AM

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 Luis A. Afonso Posts: 4,758 From: LIsbon (Portugal) Registered: 2/16/05
Re: No-Null HST . . .
Posted: Feb 19, 2013 5:34 AM

It was shown, by two different procedures (Bootstrap and Intra-Permutations that the length difference between female and male spider was, in mean values, 2.21 mm.

__a) For alpha = 5% we have:

______________|______|_______|_______|_____
______________0______1.76____1.21________Intra
_____________________1.747___1.210_______Boots

__b) For alpha = 1% we have:

______________|____|_______|_______|____
______________0____1.63____1.21________Intra
___________________1.600___1.210_______Boots

It was fine, I mean, that People - against - NHST get aware how wrong are: in fact it´s easy to conclude that at least one can warrant that the difference are AT LEAST 1.76mm (1.747) with 95% probability and 1.63 (1.60) with 99% . . .
By the reasons yet indicated the Intra-Permutation method because do not distorts data (contrarily to Bootstrap) is candidate to be the better (preferable) one. It is true that they show (almost) complete concordance.

Luis A. Afonso

Date Subject Author
2/17/13 Luis A. Afonso
2/18/13 Luis A. Afonso
2/19/13 Luis A. Afonso
2/19/13 Luis A. Afonso
2/19/13 Luis A. Afonso
2/19/13 Luis A. Afonso
2/19/13 Luis A. Afonso
2/19/13 Luis A. Afonso
2/19/13 Luis A. Afonso
2/20/13 Luis A. Afonso