For instance, @code{/NTILES=4} would cause quartiles to be reported.
The HISTOGRAM subcommand causes the output to include a histogram for
-each specified variable. The X axis by default ranges from the
+each specified numeric variable. The X axis by default ranges from the
minimum to the maximum value observed in the data, but the MINIMUM and
MAXIMUM keywords can set an explicit range. The Y axis by default is
labeled in frequencies; use the PERCENT keyword to causes it to be
labeled in percent of the total observed count. Specify NORMAL to
superimpose a normal curve on the histogram.
+Histograms are not created for string variables.
The PIECHART adds a pie chart for each variable to the data. Each
slice represents one value, with the size of the slice proportional to
subcommand.
In general mode, numeric and string variables may be specified on
-TABLES. Although long string variables are allowed, only their
-initial short-string parts are used. In integer mode, only numeric
-variables are allowed.
+TABLES. In integer mode, only numeric variables are allowed.
The MISSING subcommand determines the handling of user-missing values.
When set to TABLE, the default, missing values are dropped on a table by
[ /STATISTICS=@{DESCRIPTIVES@} ]
[ /MISSING=@{ANALYSIS, LISTWISE@} @{INCLUDE, EXCLUDE@} ]
+
+ [ /METHOD=EXACT [ TIMER [(n)] ] ]
@end display
NPAR TESTS performs nonparametric tests.
If the /STATISTICS subcommand is also specified, then summary statistics are
produces for each variable that is the subject of any test.
+Certain tests may take a long time to execute, if an exact figure is required.
+Therefore, by default asymptotic approximations are used unless the
+subcommand /METHOD=EXACT is specified.
+Exact tests give more accurate results, but may take an unacceptably long
+time to perform. If the TIMER keyword is used, it sets a maximum time,
+after which the test will be abandoned, and a warning message printed.
+The time, in minutes, should be specified in parentheses after the TIMER keyword.
+If the TIMER keyword is given without this figure, then a default value of 5 minutes
+is used.
+
@menu
* 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.
If more than two distinct, non-missing values for a variable
under test are encountered then an error occurs.
-If the test proportion is equal to 0.5, then a one tailed test is
+If the test proportion is equal to 0.5, then a two tailed test is
reported. For any other test proportion, a one tailed test is
reported.
For one tailed tests, if the test proportion is less than
@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
If no /EXPECTED subcommand is given, then then equal frequencies
are expected.
+@node WILCOXON
+@subsection Wilcoxon Matched Pairs Signed Ranks Test
+@comment node-name, next, previous, up
+@vindex WILCOXON
+@cindex wilcoxon matched pairs signed ranks test
+
+@display
+ [ /WILCOXON varlist [ WITH varlist [ (PAIRED) ]]]
+@end display
+
+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.
+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 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
display a warning, but will proceed with the analysis.
The @code{CONTRAST} subcommand may be given up to 10 times in order
to specify different contrast tests.
-@setfilename ignored
@node RANK
@comment node-name, next, previous, up