STATISTICS Subcommand (MEANS command)

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

  • Statistics requested on STATISTICS are computed in addition to the statistics displayed in the Group Statistics table.
  • If STATISTICS is specified without keywords, MEANS computes ANOVA.
  • If two or more dimensions are specified, the second and subsequent dimensions are ignored in the analysis-of-variance table. To obtain a two-way and higher analysis of variance, use the ANOVA or MANOVA procedure. The ONEWAY procedure calculates a one-way analysis of variance with multiple comparison tests.

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 is the default if STATISTICS is specified without keywords.

LINEARITY . Test of linearity. LINEARITY (alias ALL) displays additional statistics to the tables 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 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 is the default if STATISTICS is omitted.

Example

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