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Re: st: chi square test for 2 independent variab lesþ
From
Richard Williams <[email protected]>
To
[email protected], statalist2 <[email protected]>
Subject
Re: st: chi square test for 2 independent variab lesþ
Date
Thu, 28 Jul 2011 16:47:50 -0500
At 03:30 PM 7/28/2011, Jonathan Grondin wrote:
Hi there,
I am trying to run a -chi2- chi-square test for two independent samples.
I ran a test on two groups of students, groupA having more
information than groupB. I would like to use the chi-square test in
order to show that the differences in the answers by group1 compared
to those of group2 are either due to randomness or either by the
fact one group answered differently based on the fact the had more
information starting with.
Each question has a choice of 5 possible answers (from 1 to 5) and I
have generated one single variable for each question. e.g. "Q1" "Q2" "Q3"
I tried dividing each question into 2 new variables by their
respective groups. e.g.: Q1A & Q1B
But when I -tab Q1A Q1B, chi2- I get no observation, maybe since
students are either in group A or in group B but can't be in both
Any idea how I could solve this problem ?
Shouldn't the variables be Q1 and Group?
-------------------------------------------
Richard Williams, Notre Dame Dept of Sociology
OFFICE: (574)631-6668, (574)631-6463
HOME: (574)289-5227
EMAIL: [email protected]
WWW: http://www.nd.edu/~rwilliam
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