*  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .
*  File:  	nonpar.SPS .
*  Date:  	2-April-2001 .
*  Author:  Bruce Weaver, weaverb@mcmaster.ca .
*  Notes:	Nonparametric tests using SPSS .
*  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .

* Display syntax commands in the Output Viewer .
SET Printback=On Length=59 Width=80.

*	[1]	The sign test example .

DATA LIST LIST /bar1 (f5.0) bar2 (f5.0).
BEGIN DATA.
20	40	
18	25	
24	38	
14	27	
5	31	
26	21	
15	32	
29	38	
15	25	
9	18	
25	32	
31	28	
35	33	
12	29	
END DATA.

* Analyze-->Nonparametric-->2 Related Samples, check Sign Test box .

NPAR TEST
  /SIGN= bar1  WITH bar2 (PAIRED)
  /MISSING ANALYSIS.

*  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .

*	[2]	Wilcoxon signed ranks test on the same data .

* 	Analyze-->Nonparametric Tests-->2 related samples, check Wilcoxon .
NPAR TEST
  /WILCOXON=bar1  WITH bar2 (PAIRED)
  /MISSING ANALYSIS.

*	T = 	smaller of (sum or positive ranks) and 
		(sum of negative ranks) = 6 .
*	Note that SPSS reports the large-sample z-test
	 version of the test rather than the exact version .

*  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .

*	[3]	Both tests can be done with a single command .

* 	Analyze-->Nonparametric Tests-->2 related samples, 
		check both Sign test and Wilcoxon text .

NPAR TEST
  /SIGN= bar1  WITH bar2 (PAIRED)
  /WILCOXON=bar1  WITH bar2 (PAIRED)
  /MISSING ANALYSIS.

*  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .

*	[4]	Mann-Whitney U test example .

DATA LIST LIST /group (f5.0) score (f5.0).
BEGIN DATA.
1	12
1	17
1	 9
1	21
2	 8
2	18
2	26
2	15
2	23
END DATA.

* Show structure of data file .
list all.

val lab group
	1	'1- Group E'
	2	'2- Group C'.

* 	Analyze-->Nonparametric Tests-->2 independent samples, 
		check Mann-Whitney U .

NPAR TESTS
  /M-W= score   BY group(1 2)
  /MISSING ANALYSIS.

* Finished.

*  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .