Minimum number of required ABX trials, Split from from topic ID: 92851 Options

[sauvage78]

The minimal number of trials depends on how successfull you are.
How quickly you are sucessfull shows how confident in yourself you are.

The time & number of sucessfull trials are tied, you should never separate them when judging an ABX log.

With F2K ABX component, 8 sucessfull trials in a row (& if all successfull in a row, it usually means quick) trials is the minimum for me.

As soon as you begin to fail you can easyly increase to 10 or 12 to try to "erease" your failures.
In this case if you fail once or twice you can usually still get a signifiant result although it usually means the ABXing was hard, & by consequence longer as you begin to hesitate.

Usually if you begin to fail more than 3 times on 12 trials, it begins to be so hard & you have so much hesitation that it begins to take forever to ABX. At this stage I usually give up by myself & declare that I cannot ABX as in general it means I am not sure that the audio part I am focusing on actually contains any real artefact.

This post has been edited by sauvage78: Jan 12 2012, 00:42

[nesf]

A Dummies guide for doing some basic two sample and three sample tests might be an idea discussing options about number of tests and such and showing how the number required changes as you add samples. My stats knowledge is more regressions and similar stuff so this isn't something I know a lot about so this thread is quite interesting for me.

I wasn't saying ye were unfriendly more that if you want to convert people like the OP you might need adopt cult like levels of friendliness.

This post has been edited by nesf: Jan 13 2012, 02:00