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st: RE: -set seed-, _uniform(), with -preserve-
Stephen P. Jenkins writes (in part):
> According to User Guide [U], page 118, "uniform() gives the same
> sequence of random numbers in every Stata session (measured from the
> start of the session) unless you reinitialize the seed."
> Does the use of -preserve- count as a new session?
No, but using the random number generator moves you along the given
sequence of random numbers to be generated (the seed specifies which
sequence of random numbers you will get), so if you generate
random numbers between the -set seed- and the -preserve-, you will
move along that sequence and (correctly) get different numbers when
generating after the -preserve- compared to those you would get had
you not already used some of that sequence before the -preserve-.
Resetting the seed starts you at the front of the sequence again...
it does not "account" for the -preserve-, instead it accounts for the
random numbers already removed from the given sequence by the first
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