🚀 go-pugleaf

In article <1992Apr14.201524.26090@unixg.ubc.ca> umsk@unixg.ubc.ca (HanJoo
Ecom) writes:

[munch]

>If I calculate a mean and variance, and confidence interval for the
>population value based on 2000 replications, would there be substantial
>differeces among the 7 options?  If so, how one could justify the 
>use of a particular method in a simulation study?
>
>  Many thanks for your time in advance.

A and B should not differ. (i.e. 1 and 5, 2 and 6, 3 and 7 are to all intents
identical, and 4 has no corresponding infinite population case)

If you use the correct formulae, the results otherwise should not differ
siginificantly also.  I can't recall whether there is a difference between
sampling with replacement and without replacement in terms of efficiency, but
with those population sizes I'd be surprised if there was.
  
The method should be dictated by the nature of the process which is being
simulated.  If you have a theoretically infinite population as your target,
then use that for your simulation.  If you don't, and you know the pop. size,
then use that instead.  Or approximate it if you don't know it.  The same
applies to which sampling technique you choose.

regardless,
&rue

Andrew.Robinson@anu.edu.au   <= forestry statistician 
(if it moves, count it; if it doesn't move then CHOP IT DOWN and count it.)
My employers don't care what I say, in fact I don't even think they know I
exist.