Pat Farrell;191340 Wrote: > jeffmeh wrote: > > P Floding;191291 Wrote: > >> Let's just stress that a negative AB or ABX means very little. > >> Certainly proves nothing in the general sense. > > > > Agreed, but let's also stipulate that it does prove that the SPECIFIC > > subject of the test CURRENTLY cannot discern an audible difference. > > Note the emphasis, as it says nothing about other subjects or even > that > > subject in the future. > > > Statistical testing never says anything about specific people or > samples, and only addresses probabilities in general. Well, we could > say > that at the time of the test, that specific person found X. But it says > > nothing about whether they would fix X again if tested again, or if > they > would find Y. > > What random testing does is expect that people would in general be > 'right' 50% of the time, just like guessing a fair coin flip. > That you test and find 10 heads in a row does not mean that the coin > was > rigged (unfair) there is a non-zero probability that will happen in a > fair random test. > > The proper phrasing is to say "the null hypothesis is that there is no > difference detectable by listening to a SB3 versus a SB3 feeding a > Larvy" and then say that in our testing, we reject the null hypothesis > with a confidence level of 95% (or 99% or whatever you want). > Meaning that we are 95% sure that there is an audible difference. > > Difference does not always mean better. > > -- > Pat > http://www.pfarrell.com/music/slimserver/slimsoftware.html
Sounds pretty. However, it is meaningless given that we do not have the perfect system to test components in. I.e your "null hypotheses" is incomplete. -- P Floding No, I didn't ABX it. And I won't even if you ask me. (Especially not if you ask me.) ------------------------------------------------------------------------ P Floding's Profile: http://forums.slimdevices.com/member.php?userid=2932 View this thread: http://forums.slimdevices.com/showthread.php?t=33986 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
