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Contributor lemeur

Computation and Presentation of Branched Questions  
Written by miamiman the 5 Jan 10 at 00:39. Related project: 1.x all. Already implemented
Per my forum thread of today...

http://www.limesurvey.org/en/support/forums/2-design-issues/35836-statistical-o utput-problems-ver-187#35991

I can not be alone in suggesting that part of the idea of a branching survey structure is to filter out responses for specficic sub-sets of responses.

If my first question asks whether people are left-handed, and question two is only geared to left-handed people, I want to present the statistics for question 2 based on the SUB-SET ONLY.

Response Q1: 10% of London is left-handed.
Subset Response Q2: 67% of left-handed people in London like pizza.

The NO ANSWER computation makes the presentation of data arduous since basically it will have to be exported to a worksheet application and the charts will have to be plotted manually.

FEATURE REQUEST: That stats/graphs take into consideration the sub-sets created by one or "n" branched questions.
1
votes
closed
Solution #1: Include the option to eliminate No Answer?
Written by miamiman the 5 Jan 10 at 00:39.
FEATURE REQUEST: That stats/graphs take into consideration the sub-sets created by one or "n" branched questions.
3
votes
closed
Solution #2: Add an option before running the stats report
Written by lemeur the 8 Jan 10 at 15:39.
Since 1.87, questions that have been hidden because will have answers field set to NULL in DB, which makes it possible to count only the total number of participants that has answer a given question.

Thus, we could add an option just before running the stats survey so that computations of percents are not computed against the total number of respondants for the survey, but the total number of respondant for this question.

Note however that this NULL differentiation of conditionnal questions makes sense only for completed responses (when the final submit button has been clicked), and thus the option would be available only when the Completed response filter is set.


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