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Re: NMA STUDY
In article <3uvgn2$2gt@news-e1a.megaweb.com>, kennystar@megaweb.com
(KENNY MORSE) writes:
> One of the questions
> I ask EVERY class I teach is if their speeding ticket had anything to do with
> the fact that they were "in a hurry". Well over 75-80% of them raise their
> hands.
This is a very biased sample! It seems to me that drivers "in a
hurry" are more likely to take obvious risks that get the attention of
the cops (and hence land in your classes).
Also note that choosing to go to traffic school is a form of
self-selection. I don't know the motivations for going to traffic
school, so I don't know how this self-selection process would further
bias your sample (it already having been biased toward "those who get
tickets"), but it seems to me that some additional bias is inevitable
here.
I would be very damned careful about drawing conclusions about the
general driving public from an informal polling of such a biased
sample.
--- Jamie Hanrahan, Kernel Mode Systems, San Diego CA
Internet: jeh@cmkrnl.com (JH645) CompuServe: 74140,2055
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