STATISTICS Subcommand (SUMMARIZE command)

Use STATISTICS to request a one-way analysis of variance and a test of linearity for each table list.

  • Statistics that are requested on STATISTICS are computed in addition to the statistics that are displayed in the Group Statistics table.
  • If STATISTICS is specified without keywords, SUMMARIZE computes ANOVA.
  • If two or more dimensions are specified, the second and subsequent dimensions are ignored in the analysis-of-variance table.

ANOVA. Analysis of variance. ANOVA displays a standard analysis-of-variance table and calculates eta and eta squared (displayed in the Measures of Association table). This setting is the default if STATISTICS is specified without keywords.

LINEARITY. Test of linearity. LINEARITY (alias ALL) displays additional statistics to the tables that are created by the ANOVA keyword—the sums of squares, degrees of freedom, and mean square associated with linear and nonlinear components, the F ratio, and the significance level for the ANOVA table and Pearson’s r and r 2 for the Measures of Association table. LINEARITY is ignored if the control variable is a string.

NONE. No additional statistics. This setting is the default if STATISTICS is omitted.

Example

SUMMARIZE TABLES=INCOME BY SEX BY RACE
  /STATISTICS=ANOVA.
  • SUMMARIZE produces a Group Statistics table of INCOME by RACE within SEX and computes an analysis of variance only for INCOME by SEX.