Date: Wed, 9 Oct 2002 11:40:18 -0500
Reply-To: "Fink, Steven" <email@example.com>
Sender: "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From: "Fink, Steven" <firstname.lastname@example.org>
Subject: Sample vs Population
Content-Type: text/plain; charset="US-ASCII"
Recently, I've been asked by several analysts about analyzing populations, that is, data not from a sample.
The purpose of a statistical test is to make estimates about the population. If my data set IS the population, are significant tests appropriate?
What about if my response rate (survey/unit) is low, say 20%. For example, I sent surveys to everyone in the population, but only received 20% of responses. Does this change your answer to the first question?