Examples (SPLIT FILE command)

Sorting and Splitting a File

SORT CASES BY SEX.
SPLIT FILE BY SEX.
FREQUENCIES VARS=INCOME /STATISTICS=MEDIAN.

• SORT CASES arranges cases in the file according to the values of variable SEX.
• SPLIT FILE splits the file according to the values of variable SEX, and FREQUENCIES generates separate median income tables for men and women.
• By default, the two groups (men and women) are compared in the same Frequency and Statistics tables.

Applying a Temporary Split File

SORT CASES BY SEX.
TEMPORARY.
SPLIT FILE SEPARATE BY SEX.
FREQUENCIES VARS=INCOME /STATISTICS=MEDIAN.
FREQUENCIES VARS=INCOME /STATISTICS=MEDIAN.

• Because of the TEMPORARY command, SPLIT FILE applies to the first procedure only. Thus, the first FREQUENCIES procedure generates separate tables for men and women. The second FREQUENCIES procedure generates tables that include both sexes.

Turning Off a Split File

SORT CASES BY SEX.
SPLIT FILE SEPARATE BY SEX.
FREQUENCIES VARS=INCOME /STATISTICS=MEDIAN.
SPLIT FILE OFF.
FREQUENCIES VARS=INCOME /STATISTICS=MEDIAN.

• SPLIT FILE does not apply to the second FREQUENCIES procedure because it is turned off after the first FREQUENCIES procedure. This example produces the same results as the example above.

Overriding a Previous Split File

SORT CASES BY SEX RACE.
SPLIT FILE BY SEX.
FREQUENCIES VARS=INCOME /STATISTICS=MEDIAN.
SPLIT FILE BY SEX RACE.
FREQUENCIES VARS=INCOME /STATISTICS=MEDIAN.

• The first SPLIT FILE command applies to the first FREQUENCIES procedure. The second SPLIT FILE command overrides the first command and splits the file by sex and race. This split is in effect for the second FREQUENCIES procedure.