I know I am taking this quote out of context (sorry FK), but your statement:
--- In vpFREE@yahoogroups.com, "Frank" <frank@...> wrote:
>
>Statistical test cannot be used on anything that's already happened, or else one opens the door for selective recruitment and confirmation bias.
>
> ~FK
>
is absolutely not true. In fact, statistical tests can only be used on "data"-- that is on stuff that already has been observed, computed, recorded, etc. In fact, statistical tests are used in determining (in the sense of ascribing a probability to) if there is or was bias, selective recruitment, etc. of events (and associated data) that has already occured.
Take a look at: http://en.wikipedia.org/wiki/Statistical_hypothesis_testing
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