Corrected various misspellings in the documentation

[pspp-builds.git] / doc / statistics.texi

diff --git a/doc/statistics.texi b/doc/statistics.texi
index b1121b498c24af28ddda49d8163d00e45673c355..bf5ea3a3bcb33d31a8e65eeec049ad4f06ffd457 100644 (file)
--- a/doc/statistics.texi
+++ b/doc/statistics.texi
@@ -258,7 +258,7 @@ useful there is more than one dependent variable and at least one factor.   If
 containing boxplots for all the factors.
 If /COMPARE=VARIABLES is specified, then one plot per factor is produced, each 
 each containing one boxplot per dependent variable.
-If the /COMPARE subcommand is ommitted, then PSPP uses the default value of 
+If the /COMPARE subcommand is omitted, then PSPP uses the default value of 
 /COMPARE=GROUPS.
  
 The ID subcommand also pertains to boxplots.  If given, it must
@@ -361,7 +361,6 @@ CROSSTABS
         /MISSING=@{TABLE,INCLUDE,REPORT@}
         /WRITE=@{NONE,CELLS,ALL@}
         /FORMAT=@{TABLES,NOTABLES@}
-                @{LABELS,NOLABELS,NOVALLABS@}
                 @{PIVOT,NOPIVOT@}
                 @{AVALUE,DVALUE@}
                 @{NOINDEX,INDEX@}
@@ -419,11 +418,6 @@ settings:
 TABLES, the default, causes crosstabulation tables to be output.
 NOTABLES suppresses them.
 
-@item
-LABELS, the default, allows variable labels and value labels to appear
-in the output.  NOLABELS suppresses them.  NOVALLABS displays variable
-labels but suppresses value labels.
-
 @item
 PIVOT, the default, causes each TABLES subcommand to be displayed in a
 pivot table format.  NOPIVOT causes the old-style crosstabulation format
@@ -611,7 +605,7 @@ The /PRINT subcommand may be used to select which features of the analysis are r
       Identical to INITIAL and EXTRACTION.
 @end itemize
 
-If /PLOT=EIGEN is given, then a ``Scree'' plot of the eigenvalues will be printed.  This can be useful for visualising
+If /PLOT=EIGEN is given, then a ``Scree'' plot of the eigenvalues will be printed.  This can be useful for visualizing
 which factors (components) should be retained.
 
 The /FORMAT subcommand determined how data are to be displayed in loading matrices.  If SORT is specified, then the variables
@@ -691,6 +685,7 @@ is used.
 * KRUSKAL-WALLIS::          Kruskal-Wallis Test
 * MANN-WHITNEY::            Mann Whitney U Test
 * MCNEMAR::                 McNemar Test
+* MEDIAN::                  Median Test
 * RUNS::                    Runs Test
 * SIGN::                    The Sign Test
 * WILCOXON::                Wilcoxon Signed Ranks Test
@@ -846,7 +841,7 @@ they follow a normal distribution with a mean of 3.5 and a standard deviation of
   NPAR TESTS
         /KOLMOGOROV-SMIRNOV (normal 3.5 2.0) = @var{score} @var{age}.
 @end example
-If the variables need to be tested against different distributions, then a seperate
+If the variables need to be tested against different distributions, then a separate
 subcommand must be used.  For example the following syntax tests @var{score} against
 a normal distribution with mean of 3.5 and standard deviation of 2.0 whilst @var{age}
 is tested against a normal distribution of mean 40 and standard deviation 1.5.
@@ -931,6 +926,31 @@ The data in each variable must be dichotomous.  If there are more
 than two distinct variables an error will occur and the test will
 not be run.
 
+@node MEDIAN
+@subsection Median Test
+@vindex MEDIAN
+@cindex Median test
+
+@display
+     [ /MEDIAN [(value)] = varlist BY variable (value1, value2) ]
+@end display
+
+The median test is used to test whether independent samples come from 
+populations with a common median.
+The median of the populations against which the samples are to be tested
+may be given in parentheses immediately after the 
+/MEDIAN subcommand.  If it is not given, the median will be imputed from the 
+union of all the samples.
+
+The variables of the samples to be tested should immediately follow the @samp{=} sign. The
+keyword @code{BY} must come next, and then the grouping variable.  Two values
+in parentheses should follow.  If the first value is greater than the second,
+then a 2 sample test is performed using these two values to determine the groups.
+If however, the first variable is less than the second, then a @i{k} sample test is
+conducted and the group values used are all values encountered which lie in the
+range [@var{value1},@var{value2}].
+
+
 @node RUNS
 @subsection Runs Test
 @vindex RUNS
@@ -1065,7 +1085,7 @@ which they would be needed. This is the default.
 
 
 @menu
-* One Sample Mode::             Testing against a hypothesised mean
+* One Sample Mode::             Testing against a hypothesized mean
 * Independent Samples Mode::    Testing two independent groups for equal mean
 * Paired Samples Mode::         Testing two interdependent groups for equal mean
 @end menu
@@ -1074,7 +1094,7 @@ which they would be needed. This is the default.
 @subsection One Sample Mode
 
 The @cmd{TESTVAL} subcommand invokes the One Sample mode.
-This mode is used to test a population mean against a hypothesised
+This mode is used to test a population mean against a hypothesized
 mean. 
 The value given to the @cmd{TESTVAL} subcommand is the value against
 which you wish to test.
@@ -1333,7 +1353,7 @@ RELIABILITY
 @end display
 
 @cindex Cronbach's Alpha
-The @cmd{RELIABILTY} command performs reliablity analysis on the data.
+The @cmd{RELIABILTY} command performs reliability analysis on the data.
 
 The VARIABLES subcommand is required. It determines the set of variables 
 upon which analysis is to be performed.
@@ -1368,7 +1388,7 @@ analysis tested against the totals.
 @section ROC
 
 @vindex ROC
-@cindex Receiver Operating Characterstic
+@cindex Receiver Operating Characteristic
 @cindex Area under curve
 
 @display