snopal: you can not have "random" and "equally distributed" without knowing the sampling size after the process

As I see this, if you take samples of length M = k * W (from
the whole string of length W), then the mean ratio of the property
in question ('?' to non '?') in each M-sample should approach the
expected ratio R (e.g. 0.1), if the number of samples taken
is large enough. (The variance of the property in equally sized
M-samples shouldn't depend on their "position" within the whole ensemble.)

But maybe I didn't understand your objection correctly?

Regards

mwa

In reply to Re^2: Finding a random position within a long string (Activeperl Build 822) by mwah
in thread Finding a random position within a long string (Activeperl Build 822) by mwah

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