POWER MEANS RELATED

POWER MEANS RELATED is available in IBM® SPSS® Statistics Base Edition. The command invokes power analysis for the related sample t-test to draw statistical inference about the difference of the two means. It is assumed that the data in each sample independently and identically follow a normal distribution with a fixed mean and variance.

POWER MEANS RELATED
     /PARAMETERS
          [ TEST={NONDIRECTIONAL**} {DIRECTIONAL} ]
          [ SIGNIFICANCE={0.05**} {value}] ]
          { NPAIRS={integer} } { POWER=[value] | [value1 TO value2 BY value3] }
          { SD={value} {value1 value2}
          [ RHO={0.5**} {value} ] MEAN={value} {value1 value2} { ES={value} }
     [ /PLOT
          [ NPAIRS([integer1 integer2]) ]
          [ ES([value1 value2]) ]
          [ NPAIRS_XAXIS([integer1 integer2]) ES_YAXIS([value1 value2]) ]
          [ NPAIRS_YAXIS([integer1 integer2]) ES_XAXIS([value1 value2]) ]
          [ VROTATE({10**} {integer}) ]
          [ HROTATE({325**} {integer}) ] ]
     [ /PRECISION
          [ HALFWIDTH={values} ]

** Default if the subcommand or keyword is omitted.

This command reads the active dataset and causes execution of any pending commands. See the topic Command Order for more information.

Syntax for the POWER MEANS RELATED command can be generated from the Power Analysis of Paired-Samples T Test dialog.

Release History

Release 28.0.1

• Added support for the PARAMETERS subcommand's ES keyword.
• Added support for the PRECISION subcommand.

Release 28.0

• PARAMETERS subcommand's POWER keyword supports [value1 TO value2 BY value3].