Re: Missing Data

[Ben Pfaff]

That should work the same in PSPP as it does in SPSS. It's still not a
clear bug report, though, because you haven't said what actually goes
wrong. It's difficult to act on such a vague report.

Can you fill in the blanks: When I run <X>, I expect <Y> to happen,
but actually <Z> happens.

Thanks,

Ben.

On Sun, Jan 10, 2021 at 5:34 PM <jhwhite@techwriteinc.com> wrote:
>
> I would recode the missing data into the same variable using -99; sometimes, 
> I would recode in a new variable. Then I would enter the -99 in the 
> variable's missing field. I tried several different versions, and the missing 
> data is still showing and is computed when I run a test.
>
> Take care,
> John
> ______________________________
>
>
> Email: JHWhite@TechWriteInc.com
> Website: www.techwriteinc.com
>
> -----Original Message-----
> From: Ben Pfaff <blp@cs.stanford.edu>
> Sent: Sunday, January 10, 2021 7:38 PM
> To: jhwhite@techwriteinc.com; pspp-users <pspp-users@gnu.org>
> Subject: Re: Missing Data
>
> How would you do this in SPSS?
>
> On Sun, Jan 10, 2021 at 2:30 PM <jhwhite@techwriteinc.com> wrote:
> >
> > In the frequencies, I see that missing data are not included in "valid 
> > percent" and "cumulative percent." The missing cases are the result of 
> > question piping in my survey.  So, those who were not taken to question 2 
> > based on their answer in question 1 would go to question 5.  As a result, 
> > the cases where the individuals did not have an opportunity to answer 
> > question 2 show up as missing data.  I want to remove this missing data for 
> > question 2 from statistical calculations not to skew the data in t-tests, 
> > crosstabs, etc.
> >
> > Take care,
> > John
> > ______________________________
> >
> >
> > Email: JHWhite@TechWriteInc.com
> > Website: www.techwriteinc.com
> >
> > -----Original Message-----
> > From: Ben Pfaff <blp@cs.stanford.edu>
> > Sent: Sunday, January 10, 2021 5:19 PM
> > To: jhwhite@techwriteinc.com; pspp-users <pspp-users@gnu.org>
> > Subject: Re: Missing Data
> >
> > OK, I think I need a more specific description of the problem, then.
> > I looked at the Frequencies procedure and I still think that it does what 
> > it is documented to do, and what SPSS documents it to do regarding missing 
> > values. So, more specifically, what are you doing, what output is 
> > appearing, and what looks wrong in that output?
> >
> > Thanks,
> >
> > Ben.
> >
> > On Sun, Jan 10, 2021 at 2:13 PM <jhwhite@techwriteinc.com> wrote:
> > >
> > > Thank you for your response. I want to remove missing data from all 
> > > considerations in descriptive statistics routines.
> > >
> > > Take care,
> > > John
> > > ______________________________
> > >
> > >
> > > Email: JHWhite@TechWriteInc.com
> > > Website: www.techwriteinc.com
> > >
> > > -----Original Message-----
> > > From: Ben Pfaff <blp@cs.stanford.edu>
> > > Sent: Sunday, January 10, 2021 4:58 PM
> > > To: jhwhite@techwriteinc.com
> > > Cc: pspp-users <pspp-users@gnu.org>
> > > Subject: Re: Missing Data
> > >
> > > On Sun, Jan 10, 2021 at 1:45 PM <jhwhite@techwriteinc.com> wrote:
> > > > I have been working on a PSPP data file and doing some cleanup
> > > > before I start the data analysis.  This afternoon I started to
> > > > address missing data in my variables.  My goal is not to have
> > > > missing data included in my data runs.  I made sure that "include 
> > > > missing values"
> > > > switch is off in the frequency tables option.  I have done this
> > > > routine for years in SPSS; but I am not successful in PSPP. Any 
> > > > suggestions?
> > >
> > > Hi, thanks for the comment.
> > >
> > > It looks to me like both PSPP syntax and the GUI support the same options 
> > > for missing value handling as SPSS does. What seem to be "missing" (ha 
> > > ha)?
> > >
> > >
> > > Scanned by McAfee and confirmed virus-free.
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> > >
> >
>