SPSS® 12.0 Command Syntax Reference

ONEWAY
Overview
Options
ONEWAY varlist BY varname
[/POLYNOMIAL=n] [/CONTRAST=coefficient list] [/CONTRAST=... ]
[/POSTHOC=([SNK] [TUKEY] [BTUKEY] [DUNCAN] [SCHEFFE] [DUNNETT[refcat)]
[DUNNETTL(refcat)] [DUNNETTR(refcat)] [BONFERRONI] [;SD]
[SIDAK] [GT2] [GABRIEL] [FREGW] [QREGW] [T2] [T3] [GH] [C]
[WALLER({100** })]) [ALPHA({0.05**})]
{Kratio} {α }
[/RANGES={LSD }([{0.05**}])] [/RANGES=...]
{DUNCAN } {α }
{SNK }
{TUKEYB }
{TUKEY }
{MODLSD }
{SCHEFFE }
[/STATISTICS=[NONE**] [DESCRIPTIVES] [EFFECTS] [HOMOGENEITY] [ALL] ]
[WELCH] [BROWNFORSYTHE]
[/PLOT MEANS ]
[/MISSING=[{ANALYSIS**}] [{EXCLUDE**}] ]
{LISTWISE } {INCLUDE }
[/MATRIX =[IN({* })] [OUT({* })] [NONE] ]
{file} {file}
**Default if the subcommand is omitted.
Example
ONEWAY V1 BY V2(1,4).
ONEWAY produces a one-way analysis of variance for an interval-level dependent variable
by one numeric independent variable that defines the groups for the analysis. Other procedures
that perform an analysis of variance are SUMMARIZE, UNIANOVA, and GLM (GLM is
available in the SPSS Advanced Models option). Some tests not included in the other procedures
are available as options in ONEWAY.
Trend and Contrasts. You can partition the between-groups sums of squares into linear, quadratic,
cubic, and higher-order trend components using the POLYNOMIAL subcommand. You
can specify up to 10 contrasts to be tested with the t statistic on the CONTRAST subcommand.
Post Hoc Tests. You can specify 20 different post hoc tests for comparisons of all possible pairs
of group means or multiple comparisons using the POSTHOC subcommand.
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