Posted by
Spousta Jan on
Dec 19, 2006; 8:30am
URL: http://spssx-discussion.165.s1.nabble.com/Significant-difference-Means-tp1072801p1072802.html
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:
[hidden email]] On Behalf Of John Antonakis
Sent: Tuesday, December 19, 2006 9:25 AM
To:
[hidden email]
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
>
>
>
>GfK BH
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>Centar za istrazivanje trzista i javnog mnijenja d.o.o.
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___________________________________
Prof. John Antonakis
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