1. Create a new datasheet.
2. In Variable View, create three variables, gender (string, width 6) response (string, width 1) and number (numeric, width 3, no decimals).
3. In Data View, enter
gender response number
male y 250
male n 350
female y 300
female n 300
4. In a new syntax file enter the following .....
weight by number.
frequencies variables = gender response.
The frequencies tables reflect the numbers in your crosstabulation.