Google Answers Logo
View Question
Q: Improvements to my building based on resident survey ( No Answer,   2 Comments )
Subject: Improvements to my building based on resident survey
Category: Science > Math
Asked by: anilcool-ga
List Price: $5.00
Posted: 11 Jul 2006 20:12 PDT
Expires: 10 Aug 2006 20:12 PDT
Question ID: 745474
Hi all, 

I am trying to build a statistical model for improvements to my 
building. My goal is to look at suggestions from a few residents and 
then pick the one that is most popular - statistically speaking. 

Think of the problem as a filtering or a funnelling system, there a lot 
of ideas at the top and then you keep on filtering till you reach a 
winning idea. 

The process can be broken down in the following steps: 

Step 1: Run a survey with 20 residents, asking them to suggest 1 
improvement to the  building. I am expecting 1-20 unique improvement 
ideas from this survey. 

Step 2: Feed the ideas from Step 1 to another set of 20 residents, and 
have them pick the top 3 that they like. Say Improvement # 7, 8 & 9 
were picked the most. 

Step 3: Feed the ideas from Step 2 to another set of 20 residents, and 
have then pick the top 1 improvement. Say improvement # 7 was picked 
the most. That would be our winner improvement. 

If there is a tie, in any of these steps, I can either re-run that 
entire step OR re-run that step with just the 2 tie results till I can 
find the winning improvement idea. So, as you can see the number of 
steps can grow quite long. 

How can I build this model correctly? Is this problem similar to any 
other statistical problem? I have the flexibility to change the number 
of residents or the logic to pick results or the number of solicited 
improvements. But, I have some ground rules & assumptions that are 
outlined below: 

1. The responders at any step can never be more than 20 but they can be 
2. The winning improvement must be reached sometime within 6 steps. 
3. No resident can contribute twice to the survey results. 
4. There are infinitely large number of residents in the community. 

One more concern: Is it good enough to just pick the most frequently 
picked improvements at every step -- the MODE -- I mean it sounds
logical when I say that #7, 8 & 9 were picked the most in Step 2, and
therefore they
go to the Step 3 for further review, but I'm wondering if there is a 
more statistical approach to pick the winners at each step. 

There is no answer at this time.

Subject: Re: Improvements to my building based on resident survey
From: myoarin-ga on 12 Jul 2006 03:49 PDT
Sounds like a good system.  Who is paying?  Is it your building?  If
it is, I would drop from the list any suggestions in the first round
that you don't agree with or that are too expensive.
And I think that you should be careful not to raise hopes too high for
those participating, telling that it is all a theoretical exercise.
Subject: Re: Improvements to my building based on resident survey
From: herkdrvr-ga on 14 Jul 2006 14:06 PDT

The problem I see is that if your population is infinitely large, a
maximum sample size of 20 would not give a good representation of the
most desired improvement for the building.  Is there any flexibility
in your sample size or can you redefine your population?


Important Disclaimer: Answers and comments provided on Google Answers are general information, and are not intended to substitute for informed professional medical, psychiatric, psychological, tax, legal, investment, accounting, or other professional advice. Google does not endorse, and expressly disclaims liability for any product, manufacturer, distributor, service or service provider mentioned or any opinion expressed in answers or comments. Please read carefully the Google Answers Terms of Service.

If you feel that you have found inappropriate content, please let us know by emailing us at with the question ID listed above. Thank you.
Search Google Answers for
Google Answers  

Google Home - Answers FAQ - Terms of Service - Privacy Policy