SPSS® 12.0 Command Syntax Reference

Example
* Matrix data with procedure REGRESSION.
MATRIX DATA VARIABLES=SAVINGS POP15 POP75 INCOME GROWTH
/CONTENTS=MEAN SD N CORR /FORMAT=UPPER NODIAGONAL.
BEGIN DATA
9.6710 35.0896 2.2930 1106.7784 3.7576
4.4804 9.1517 1.2908 990.8511 2.8699
50 50 50 50 50
-.4555 .3165 .2203 .3048
-.9085 -.7562 -.0478
.7870 .0253
-.1295
END DATA.
MATRIX DATA 963
REGRESSION MATRIX=IN(*) /VARIABLES=SAVINGS TO GROWTH
/DEP=SAVINGS /ENTER.
• MATRIX DATA is used to generate a matrix that REGRESSION can read. REGRESSION reads
and writes matrices that always contain the mean, standard deviation, N, and Pearson correlation
coefficients. Data in this example do not have ROWTYPE_ values, and the correlation
values are from the upper triangle of the matrix without the diagonal values.
• ROWTYPE_ is not specified on VARIABLES because its values are not included in the data.
• Because there are no ROWTYPE_ values, CONTENTS is required to define the record types
and the order of the records in the file.
• By default, MATRIX DATA reads values from the lower triangle of the matrix, including the
diagonal values. FORMAT is required in this example to indicate that the data are in the
upper triangle and do not include diagonal values.
• BEGIN DATA immediately follows the MATRIX DATA command.
• The REGRESSION procedure reads the data matrix. An asterisk (*) is specified as the
input file on the MATRIX subcommand because the data are in the working file. Since
there is a single vector of N’s in the data, missing values are handled listwise (the default
for REGRESSION).