How do I insert missing rows and conduct math between multiple files?

How do I insert missing rows and conduct math between multiple files?

References

Reference NO 1

http://stackoverflow.com/questions/15194023/how-do-i-insert-missing-rows-and-conduct-math-between-multiple-files

Reference NO 2

http://www.nbclosangeles.com/news/national-international

Reference NO 3

http://listserv.uga.edu/cgi-bin/wa?A3=ind9901&L=spssx-l&P=139014&E=2&B=--------------56B778435C5&N=DATAREST.doc&T=application/msword

Reference NO 4

http://www.rexx.com/~dkuhlman/python_book_01.html

Reference NO 5

http://www.ats.ucla.edu/stat/stata/seminars/missing_data/mi_in_stata_pt1.htm

Reference NO 6

http://www.usd.edu/~rbraunst/research/SPSS_tutorial.pdf

Reference NO 7

http://biostat.mc.vanderbilt.edu/wiki/pub/Main/DRTCWorkshops/How_to_Enter_Data_in_SPSS.ppt

Reference NO 8

http://sociology-data.sju.edu/documents/data_analysis_guide_spss.doc