In Stata, how do I conduct a Chi-square test with aggregate data?
In Stata, both the
.tabi commands conduct the Pearson's Chi-square test. The
.tabulate (may be abbreviated as
command produces one- or two-way frequency tables given one or two
variables. The commands also can run a Chi-square test using the
. tab grade gender, chi2
The above command will produce a cross-table of
gender and its Chi-square statistic.
When you do not have individual data, but only aggregate
frequencies, use the
.tabi command. You must list the
frequencies of each cell with a backward slash
\) to separate a row of a table. Consider
the following examples:
. tabi 22 44 \ 34 56, chi2
. tabi 34 45 \ 34 53 \ 34 34, chi2
. tabi 34 45 36 \ 34 64 96, chi2
The first command conducts a Chi-square test for a 2x2 table, while the second and third commands run the test for 3x2 and 2x3 tables, respectively.
If you have questions about using statistical and mathematical software at Indiana University, email UITS Research Analytics. Research Analytics is located on the IU Bloomington campus at Woodburn Hall 200, and is open for consultation by appointment Monday-Friday 9am-5pm. For more, see Research Analytics, or call 812-855-4724 (IUB) or 317-278-4740 (IUPUI).
This is document alre in the Knowledge Base.
Last modified on 2014-06-25.
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