Partitioned Effects: Number in Parentheses (MANOVA: Univariate command)

You can specify a number in parentheses following a factor name on the DESIGN subcommand to identify individual degrees of freedom or partitions of the degrees of freedom that are associated with an effect.

  • If you specify PARTITION, the number refers to a partition. Partitions can include more than one degree of freedom (see PARTITION Subcommand (MANOVA: Univariate command)). For example, if the first partition of SEED includes two degrees of freedom, the term SEED(1) on a DESIGN subcommand tests the two degrees of freedom.
  • If you do not use PARTITION, the number refers to a single degree of freedom that is associated with the effect.
  • The number refers to an individual level for a factor if that factor follows the keyword WITHIN or MWITHIN (see the sections about nested effects and pooled effects below).
  • A factor has one less degree of freedom than it has levels or values.

Example

MANOVA YIELD BY SEED(1,4) WITH RAINFALL
  /PARTITION(SEED)=(2,1)
  /DESIGN=SEED(1) SEED(2).
  • Factor SEED is subdivided into two partitions, one partition containing the first two degrees of freedom and the other partition containing the last degree of freedom.
  • The two partitions of SEED are treated as independent effects.