Remove values in Frequency Tabulation

[addisababa]

I am tabulating frequencies for a survey. In the frequency tabulation tools option (not the tabulation application) is there a way to remove values from the denominator? I have coded 98=Prefer not to answer and 99=Blank/spoiled and would like to remove them from the frequencies.

Thanks for the help in advance

[Gregory Martin]

You can create a copy of your dictionary with those values removed and then when you use the Frequency Tool, select "Value Sets" for "Types of Frequencies." That will show you only data that matches the values in your value sets.