* question 1.
IF (pet = -1 & shower=1 & kitchen=1 & price<=20) one = 1 .
EXECUTE .
FREQUENCIES   VARIABLES=one.

* question 2.
USE ALL.
COMPUTE filter_$=(country = "CA").
VARIABLE LABEL filter_$ 'country = "CA" (FILTER)'.
VALUE LABELS filter_$  0 'Not Selected' 1 'Selected'.
FORMAT filter_$ (f1.0).
FILTER BY filter_$.
EXECUTE .
FREQUENCIES   VARIABLES=minimark.

FILTER OFF.
USE ALL.
EXECUTE .

* question 3.
USE ALL.
COMPUTE filter_$=(shower = 1 & minimark = 1).
VARIABLE LABEL filter_$ 'shower = 1 & minimark = 1 (FILTER)'.
VALUE LABELS filter_$  0 'Not Selected' 1 'Selected'.
FORMAT filter_$ (f1.0).
FILTER BY filter_$.
EXECUTE .

FREQUENCIES   VARIABLES=price  /FORMAT=NOTABLE   /STATISTICS=MINIMUM.
  
FILTER OFF.
USE ALL.
EXECUTE .

* question 4.
USE ALL.
COMPUTE filter_$=(pet ~= -1).
VARIABLE LABEL filter_$ 'pet ~= -1 (FILTER)'.
VALUE LABELS filter_$  0 'Not Selected' 1 'Selected'.
FORMAT filter_$ (f1.0).
FILTER BY filter_$.
EXECUTE .
FREQUENCIES   VARIABLES=pet  /FORMAT=NOTABLE   /STATISTICS=MEAN.
  
FILTER OFF.
USE ALL.
EXECUTE .