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For those who are interested more information is available on [http://www.stanford.edu/class/msande121/Materials/ExcelTut.pdf the rand() function].  [http://www.stanford.edu/class/msande121/Materials/ExcelTut.pdf More on the rand() function]. 
How do I generate a random sample in EXCEL?
Let us suppose we wish to randomly sample n cases of data comprising N people.
1. Put =RAND()*N in row 1 of the column adjacent to the right most data column in the spreadsheet
2. Copy and paste into remaining N1 rows
3. Go to Data>sort on the EXCEL menu and make sure you sort in ascending order by the column you have just created. Click OK.
4. Delete rows n+1 to N.
We have randomly permuted the data rows so that the first, or any adjacent, n rows represent a random sample of size n.
[http://www.stanford.edu/class/msande121/Materials/ExcelTut.pdf More on the rand() function].
There is also easy to use syntax to perform this in SPSS.