SPSS® 12.0 Command Syntax Reference

964 MATRIX DATA
Example
* Matrix data with procedure ONEWAY.
MATRIX DATA VARIABLES=EDUC ROWTYPE_ WELL /FACTORS=EDUC.
BEGIN DATA
1 N 65
2 N 95
3 N 181
4 N 82
5 N 40
6 N 37
1 MEAN 2.6462
2 MEAN 2.7737
3 MEAN 4.1796
4 MEAN 4.5610
5 MEAN 4.6625
6 MEAN 5.2297
. MSE 6.2699
. DFE 494
END DATA.
ONEWAY WELL BY EDUC(1,6) /MATRIX=IN(*)
• One of the two types of matrices that the ONEWAY procedure reads includes a vector of
frequencies for each factor level, a vector of means for each factor level, a record containing
the pooled variance (within-group mean square error), and the degrees of freedom for
the mean square error. MATRIX DATA is used to generate a working data file containing
this type of matrix data for the ONEWAY procedure.
• ROWTYPE_ is explicit on VARIABLES and identifies record types.
• Because factors are present in the data, the continuous variables (WELL) must be specified
last on VARIABLES and must be last in the data.
• The FACTORS subcommand identifies EDUC as the factor variable.
• MSE is entered in the data as the ROWTYPE_ value for the vector of square pooled standard
deviations.
• DFE is entered in the data as the ROWTYPE_ value for the vector of degrees of freedom.
• Records with pooled information have the system-missing value (.) for the factors.
VARIABLES Subcommand
VARIABLES specifies the names of the variables in the raw data and the order in which they
occur.
• VARIABLES is required.
• There is no limit to the number of variables that can be specified.
• If ROWTYPE_ is specified on VARIABLES, the continuous variables must be the last variables
specified on the subcommand and must be last in the data.
• If split-file variables are present, they must also be specified on SPLIT.
• If factor variables are present, they must also be specified on FACTORS.