why do missing data not recognize in spm why is spss not correctly recognizing missing data why spss recognize missing value why doesn't spss recognize missing data where does missing data come from why does spss not recognize missing what does missing dummy mean in spss why does spss ignore missing data what is the missing in spss why doesn't spss recognize missing data why isn't spss recognized for missing data why does spss ignore missing data why doesn't spss recognize missing digits why is missing missing in spss? which statement means missing? why is missing data numeric what is mean by missing dummy why does spss not recognize missing data? why does spms not recognize missing data? how do i construct the missing dummy in sputsky