Date: Fri, 9 Sep 2005 14:00:47 -0700
Reply-To: Chao Yawo <email@example.com>
Sender: "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From: Chao Yawo <firstname.lastname@example.org>
Subject: Stratified Sampling
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I am teaching a sophomore social statistics course.
I've been covering sampling, especially stratified
sampling this week.
The students need some assistance in explaining the
weighting procedures associated with disproportionate
stratified sampling. How can I demonstrate this in a
class with a concrete example.
Also, is there any guidelines as to how to oversample
a particular stratum? Assuming i have 2 groups (males
are 20% and Females=80%). If I am drawing a sample of
100 students - it means I would end up with 20 males
and 80 females. If i need to oversample the males,
what values should i chose - 30, 40, 50? - is the
choice really arbitrary or is guided by theory or
I will appreciate your thoughts on this.
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