How to Calculate Interpolated Median (IM) Using Syntax

Posted by asp778ACU-2 on
URL: http://spssx-discussion.165.s1.nabble.com/How-to-Calculate-Interpolated-Median-IM-Using-Syntax-tp5740421.html

Dear SPSS Base Gurus,

I am trying to work something out which I am sure SPSS can do to calculate
the IM
N = total number of valid responses to the question
M = the standard median of the scores
N1 = number of scores less than M (strictly less, not equal)
N2 = number of scores equal to M

https://spu.edu/depts/insdev/interpolated_median_explanation.pdf
 
But I am not sure how to translate the IM formula above into the syntax.
Attached dummy survey data set list that required interpolated median for Q1
and Q2.
What I try to achieve populate IM figures using syntax.
As I am newbie with very basic knowledge of SPSS, any enlightenment will be
appreciated.

SampleData.sav
<http://spssx-discussion.1045642.n5.nabble.com/file/t341643/SampleData.sav>
Thanks in advance.




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