Date: Tue, 19 Dec 2006 09:52:01 +0100
Reply-To: =?windows-1257?Q?Samir_Omerovi=E3?= <samir.omerovic@gfk.ba>
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From: =?windows-1257?Q?Samir_Omerovi=E3?= <samir.omerovic@gfk.ba>
Subject: Re: Significant difference - Means
In-Reply-To: <E08B564BAA29FE4F8EC8BAF42FE0A01F01055533@bubsex02.cen.csin.cz>
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Hi Jan,
I think that I can not use Independent samples T-test since I have dependent variables. Those 500
students are the part of 1000 respondents. I do not want to test students vs. non-students but
students vs. all (non-students + students).
Samir
-----Original Message-----
From: SPSSX(r) Discussion [mailto:SPSSX-L@LISTSERV.UGA.EDU] On Behalf Of Spousta Jan
Sent: Tuesday, December 19, 2006 9:31 AM
To: SPSSX-L@LISTSERV.UGA.EDU
Subject: Re: Significant difference - Means
I am very sorry, but this would be wrong in this case. Because the number 3.5 is not a constant
known with (almost) no error, but a sample statistics based on the 1000 respondents. Therefore the
Independent-samples T-test should be used as I've written in my previous posting.
Jan
-----Original Message-----
From: SPSSX(r) Discussion [mailto:SPSSX-L@LISTSERV.UGA.EDU] On Behalf Of John Antonakis
Sent: Tuesday, December 19, 2006 9:25 AM
To: SPSSX-L@LISTSERV.UGA.EDU
Subject: Re: Significant difference - Means
If you wiysh to test the mean of a particular group against the mean of a particular value then you
can use the single-sample t-test (from the Menus Analyze/Compare Means/One sample t-test), or use
the syntax:
T-TEST
/TESTVAL = 3.5
/MISSING = ANALYSIS
/VARIABLES = VAR00001
/CRITERIA = CI(.95) .
HTH,
J.
At 09:05 19.12.2006 +0100, =?iso-8859-2?Q?Samir_Omerovi=E6?= wrote:
>Hi to all,
>
>
>
>My first question is what test should I use if I need to assess the
>significance of the mean of some subgroup in comparison the mean of the
>total population. For example I have 1000 respondents that answered a
>question on 7-point scale. Their mean/average is 3,5. I have 500
>students among those 1000 respondents with mean/average 2,9. I want to
>know if these values are significantly different.
>What test should I use in SPSS?
>
>
>
>Thanks to all in advance.
>
>
>
>Samir
>
>
>
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___________________________________
Prof. John Antonakis
Faculty of Management and Economics
University of Lausanne
Internef #527
CH-1015 Lausanne-Dorigny
Switzerland
Tel: ++41 (0)21 692-3438
Fax: ++41 (0)21 692-3305
http://www.hec.unil.ch/jantonakis
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