Diff for "FAQ/rand" - CBU statistics Wiki
location: Diff for "FAQ/rand"
Differences between revisions 3 and 4
Revision 3 as of 2007-08-15 14:39:24
Size: 769
Editor: PeterWatson
Comment:
Revision 4 as of 2007-08-15 14:40:03
Size: 770
Editor: PeterWatson
Comment:
Deletions are marked like this. Additions are marked like this.
Line 15: Line 15:
For those who are interested more information is available on[http://www.stanford.edu/class/msande121/Materials/ExcelTut.pdf the rand() function]. For those who are interested more information is available on [http://www.stanford.edu/class/msande121/Materials/ExcelTut.pdf 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 N-1 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.

For those who are interested more information is available on [http://www.stanford.edu/class/msande121/Materials/ExcelTut.pdf the rand() function].

There is also easy to use syntax to perform this in SPSS.

None: FAQ/rand (last edited 2016-02-18 11:14:32 by PeterWatson)