MANOVA Variable List (MANOVA: Univariate command)

The variable list specifies all variables that will be used in any subsequent analyses.

  • The dependent variable must be the first specification on MANOVA.
  • By default, MANOVA treats a list of dependent variables as jointly dependent, implying a multivariate design. However, you can use the ANALYSIS subcommand to change the role of a variable or its inclusion status in the analysis.
  • The names of the factors follow the dependent variable. Use the keyword BY to separate the factors from the dependent variable.
  • Factors must have adjacent integer values, and you must supply the minimum and maximum values in parentheses after the factor name(s).
  • If several factors have the same value range, you can specify a list of factors followed by a single value range in parentheses.
  • Certain one-cell designs, such as univariate and multivariate regression analysis, canonical correlation, and one-sample Hotelling’s T 2, do not require a factor specification. To perform these analyses, omit the keyword BY and the factor list.
  • Enter the covariates, if any, following the factors and their ranges. Use the keyword WITH to separate covariates from factors (if any) and the dependent variable.

Example

MANOVA DEPENDNT BY FACTOR1 (1,3) FACTOR2, FACTOR3 (1,2).
  • In this example, three factors are specified.
  • FACTOR1 has values 1, 2, and 3, while FACTOR2 and FACTOR3 have values 1 and 2.
  • A default full factorial model is used for the analysis.

Example

MANOVA Y BY A(1,3) WITH X
  /DESIGN.
  • In this example, the A effect is tested after adjusting for the effect of the covariate X. It is a test of equality of adjusted A means.
  • The test of the covariate X is adjusted for A. The test is a test of the pooled within-groups regression of Y on X.