Adding a paired preference or a net difference test
If you are applying a paired preference test or a net difference test to a table, the process is slightly different from that for other statistical tests, as you also need to add a row or column to the table to contain the results.
To add a paired preference or a net difference test
1 In the Tables pane, select the table to which you want to apply the test.
2 On the table, select the variable on which you want to run the test.
In the case of the Net difference test, this must be on the top of the table; for the paired preference test it can be either on the top or on the side.
3 Click: Variables > Edit Table Variable.
4 On the Edit Table Variable window menu, choose
Categories Insert Categories or click the Insert button
.
The Insert Categories dialog opens. This contains a list of all the items that you can add to a variable. In this case, you need to add either a paired preference or a net difference item, depending on the type of test you want to run.
5 Select the item in the Available list, and then click the >> button to move it to the Items to insert list.
6 Click OK.
7 In the Edit Table Variable window, ensure that the new item is at the bottom of the list of categories, using the move down button
.
8 Click Save and Close.
See also