* BINOMIAL:: Binomial Test
* CHISQUARE:: Chisquare Test
* WILCOXON:: Wilcoxon Signed Ranks Test
+* SIGN:: The Sign Test
@end menu
[ /BINOMIAL[(p)]=var_list[(value1[, value2)] ] ]
@end display
-The binomial test compares the observed distribution of a dichotomous
+The /BINOMIAL subcommand compares the observed distribution of a dichotomous
variable with that of a binomial distribution.
The variable @var{p} specifies the test proportion of the binomial
distribution.
@node CHISQUARE
-@subsection Chisquare test
+@subsection Chisquare Test
@vindex CHISQUARE
@cindex chisquare test
@end display
-The chisquare test produces a chi-square statistic for the differences
+The /CHISQUARE subcommand produces a chi-square statistic for the differences
between the expected and observed frequencies of the categories of a variable.
Optionally, a range of values may appear after the variable list.
If a range is given, then non integer values are truncated, and values
are expected.
@node WILCOXON
-@subsection Wilcoxon
+@subsection Wilcoxon Matched Pairs Signed Ranks Test
@comment node-name, next, previous, up
@vindex WILCOXON
@cindex wilcoxon matched pairs signed ranks test
[ /WILCOXON varlist [ WITH varlist [ (PAIRED) ]]]
@end display
-The wilcoxon subcommand tests for differences between means of the
-variables listed. The test does not make any assumptions about the
-variances of the samples.
+The /WILCOXON subcommand tests for differences between medians of the
+variables listed.
+The test does not make any assumptions about the variances of the samples.
+It does however assume that the distribution is symetrical.
If the @code{WITH} keyword is omitted, then tests for all
combinations of the listed variables are performed.
of variable preceding @code{WITH} against variable following
@code{WITH} are performed.
-If the number of observations is large, and exact tests have been
-requested. then the test may take a very long time to complete.
+
+@node SIGN
+@subsection Sign Test
+@vindex SIGN
+@cindex sign test
+
+@display
+ [ /SIGN varlist [ WITH varlist [ (PAIRED) ]]]
+@end display
+
+The /SIGN subcommand tests for differences between medians of the
+variables listed.
+The test does not make any assumptions about the
+distribution of the data.
+
+If the @code{WITH} keyword is omitted, then tests for all
+combinations of the listed variables are performed.
+If the @code{WITH} keyword is given, and the @code{(PAIRED)} keyword
+is also given, then the number of variables preceding @code{WITH}
+must be the same as the number following it.
+In this case, tests for each respective pair of variables are
+performed.
+If the @code{WITH} keyword is given, but the
+@code{(PAIRED)} keyword is omitted, then tests for each combination
+of variable preceding @code{WITH} against variable following
+@code{WITH} are performed.
@node T-TEST
@comment node-name, next, previous, up