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bunch
2009 Oct 13
4
Counting
*Hi all,
*
*Assume that I have the following data set with tow variables and I want
count the number of observation with identical values
*
**
*x1 x2*
* 1 1 *
* 1 0 *
* 0 1*
* 0 1*
* 0 0*
* 1 1*
* 0 1
*
I want the following output
**
*
*
*n1=3 # number of identical observation between x1 and x2 variables*
*n2=4 # number of different observation*
How do I do it in