[HOT] Fwd: [OpenStreetMap] Student Survey Humanitarian OpenStreetMap Team Goethe-University Frankfurt

Blake Girardot bgirardot at gmail.com
Thu Jun 11 18:53:50 UTC 2015

Hi Katja,

I am investigating this further, to my knowledge HOT has not given this 
University nor any one else permission to use our systems and data for 
anything other than HOT mapping.

Random contacts from people and organizations you do not know should 
always be treated with great caution and I would suggest avoiding 
following links that are sent to you if you have no previous engagement 
with or knowledge of the senders.


On 6/11/2015 8:35 PM, Katja Ulbert wrote:
> Hi John,
> it wasn´t my intention to falsify their results;-) But the request
> didn´t come from HOT itself, so I wanted to check if anybody knew about
> it. I have never given my email or contact data to this university. They
> are registered as a HOT user and send me a message.
> Regards
> Katja
> Am 11/06/15 um 19:42 schrieb john whelan:
>> If you've been selected for a random sample, and it is a true random
>> sample, passing the link to anyone else effectively contaminates the
>> sample.
>> Random sampling is a mathematical technique that is used in surveys to
>> draw conclusions based on a small sample that can be extrapolated to a
>> larger population.
>> By passing the link on the responses will be bias towards more
>> experienced mappers who read the list, so to preserve the methodology
>> the survey should only be completed by the person it was sent to.
>> There was a discussion earlier in the list with a comment from Pierre
>> saying it would be useful to run slightly different surveys with
>> questions aimed at new mappers, mappers with some experience and  very
>> experienced mappers.  I don't know if this survey is of that type.
>> Cheerio John
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