PAIRS Subcommand (T-TEST command)

PAIRS requests paired-samples t tests.

  • The minimum specification for a paired-samples test is PAIRS with an analysis list. Only numeric variables can be specified on the analysis list. The minimum analysis list is two variables.
  • If keyword WITH is not specified, each variable in the list is compared with every other variable on the list.
  • If keyword WITH is specified, every variable to the left of WITH is compared with every variable to the right of WITH. WITH can be used with PAIRED to obtain special pairing.
  • To specify multiple analysis lists, use multiple PAIRS subcommands, each separated by a slash. Keyword PAIRS is required only for the first analysis list; a slash can be used to separate each additional analysis list.

(PAIRED). Special pairing for paired-samples test. PAIRED must be enclosed in parentheses and must be used with keyword WITH. When PAIRED is specified, the first variable before WITH is compared with the first variable after WITH, the second variable before WITH is compared with the second variable after WITH, and so forth. The same number of variables should be specified before and after WITH; unmatched variables are ignored and a warning message is issued. PAIRED generates an error message if keyword WITH is not specified on PAIRS.

Example

T-TEST  PAIRS=TEACHER CONSTRUC MANAGER.
T-TEST  PAIRS=TEACHER MANAGER WITH CONSTRUC ENGINEER.
T-TEST  PAIRS=TEACHER MANAGER WITH CONSTRUC ENGINEER (PAIRED).
  • The first T-TEST compares TEACHER with CONSTRUC, TEACHER with MANAGER, and CONSTRUC with MANAGER.
  • The second T-TEST compares TEACHER with CONSTRUC, TEACHER with ENGINEER, MANAGER with CONSTRUC, and MANAGER with ENGINEER. TEACHER is not compared with MANAGER, and CONSTRUC is not compared with ENGINEER.
  • The third T-TEST compares TEACHER with CONSTRUC and MANAGER with ENGINEER.