LISTSERV at the University of Georgia
Menubar Imagemap
Home Browse Manage Request Manuals Register
Previous messageNext messagePrevious in topicNext in topicPrevious by same authorNext by same authorPrevious page (October 2002)Back to main SPSSX-L pageJoin or leave SPSSX-L (or change settings)ReplyPost a new messageSearchProportional fontNon-proportional font
Date:         Wed, 9 Oct 2002 16:43:14 -0600
Reply-To:     Geoff Matthews <>
Sender:       "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From:         Geoff Matthews <>
Subject:      Re: Sample vs Population
Comments: To: Alison Neustrom <>
Content-Type: text/plain; charset="US-ASCII"

That's a great response rate, and high enough that inferences made from it are very reliable.

At least according to Dillman and "The Total Design Method."

Geoff Matthews

-----Original Message----- From: Alison Neustrom [] Sent: Wednesday, October 09, 2002 4:38 PM To: SPSSX-L@LISTSERV.UGA.EDU Subject: Re: Sample vs Population

What would you say if you had 80% of a non-random sample of a population (I sent them to everyone but only got back 80%)? Would you consider that a sample or a population?

-----Original Message----- From: SPSSX(r) Discussion [mailto:SPSSX-L@LISTSERV.UGA.EDU]On Behalf Of Jelani Mandara Sent: Wednesday, October 09, 2002 11:50 AM To: SPSSX-L@LISTSERV.UGA.EDU Subject: Re: Sample vs Population

Fink, Steven wrote:

>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? > > > No. Descriptives and Effect Sizes are still relevant, but not inferential stats.

> > >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? > > > >

Then you only have a (probably nonrandom) sample of the population. The logic of inferential stats applies.

>Thanks > > > >Steve > > >

-- Jelani Mandara Assistant Professor Human Development and Social Policy Northwestern University 2120 Campus Drive Evanston, Il 60208

Office Phone: (847)491-3122 Web Page:

Back to: Top of message | Previous page | Main SPSSX-L page