[R] how can i deal with multiple response data?

[luc tardieu]

Hi,

What do you want to do with these data?

If you just need to know what share of the respondants
use each software, I suggest to make means of columns,
the sum of lines will give you the number of softwares
used by each respondent, the mean of the sums of lines
will thus give you the average number of softwares
used, etc.

Luc



> On Fri, 24 Jun 2005, ronggui wrote:
> 
> > in a questionair i ask:
> > Which of the following software packages do you
> use for data analysis?
> > 1 	R
> > 2 	S-Plus
> > 3 	SAS
> > 4 	SPSS
> > 5 	Stata
> > 6 	others
> > (In this question, respondents are asked to mark
> the name of each package they use. Respondents may
> mark any number of packages)
> >
> > and code the answer as:
> >                q1_R   q1_SPlus     q1_SAS   
> q1_SPSS   q1_Stata  q1_others
> >        1.         1          0          0         
> 0          0          1
> >        2.         1          1          0         
> 0          1          0
> >        3.         0          0          0         
> 0          1          0
> >        4.         0          0          1         
> 0          0          0
> >        5.         0          0          1         
> 0          0          1
> >
> >
> > my question: is there any function  dealing with
> this data?