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From: MATT MARINER BROZE <marinerkayaks_at_msn.com>
subject: Re: [Paddlewise] PFDs
Date: Thu, 21 Jan 2010 02:15:09 -0800
I wrote:
>If you knew the odds of drowning while kayaking during each year were one in
>5000 would you paddle?
>If you live in an urban area that is about the average risk of dying in an
>auto accident (each year) if you drive a car.

Daniel: gypsy_trillium_at_yahoo.ca wrote".
>>>>>>>Are these quotable and verifiable statistics Matt? If they are, I've a
use
for them. Thanks!
~~~daniel~<<<<<<<<<<<<<<<

I first read that statistic in a book called "The Myth of Heterosexual Aids"
copyright 1990. At that time most writers on the subject were predicting a
world wide pandemic of Aids to sweep the world unless we took drastic measures
to stop it. The author, Michael Fumento, used that statistic to point out that
if you were a heterosexual it was more dangerous to drive a mile to buy a
condom than to have unprotected sex with a random heterosexual of the opposite
sex. He also pointed out the inconvenient truth that because of the difficulty
in catching with each sexual encounter (about 1 in 300 for men and 1 in 100
for women) that being in a committed monogamous relationship was more
dangerous than promiscuous sex because of the far fewer sexual encounters for
the promiscuous individual each year vs. the ten times less risk for using a
condom.

I questioned the risk level for driving that he claimed so I made a
calculation of it myself (using the number of motorists that died in a year
and the number of drivers, I think) and got about the same result. I think
death rates for motorists have decreased some since then, likely due to nearly
all vehicles having airbags now. Still you can probably find out that
statistic somewhere or do you own calculation of it if you want to use it.

It was an interesting book. It also taught me about the "Coolidge Effect". You
will have to look that up for yourself.
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From: Mark Sanders <marksanders_at_sandmarks.net>
subject: Re: [Paddlewise] PFDs
Date: Thu, 21 Jan 2010 12:21:27 -0800
Yes, good ol' Silent Cal. He couldn't talk much, he was winded from all 
the ladies! It was the "Coolidge Effect" that convinced me to become  a 
Republican! Finally a politician with the kind of policy I could embrace.

M

On 1/21/2010 2:15 AM, MATT MARINER BROZE wrote:

It was an interesting book. It also taught me about the "Coolidge 
Effect". You will have to look that up for yourself.
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From: Carey Parks <carey_at_jimparksfamily.com>
subject: Re: [Paddlewise] PFDs
Date: Thu, 21 Jan 2010 10:01:20 -0500
Careful With That Axe, Eugene

I don't know to what purpose the statistic might be put, but if you are in
any way making inferences about the future (and you have an interest in
being accurate) you probably would do better to leave it out of your
argument. If however you are merely speaking about the time period, location
and population in which the data were collected, as in comparing one year to
another in the same city, then it's fair play.

Some things that can't be done with a statistic like that:

o attempt to predict the future when there are changing external conditions
o make statements about the likelihood of an outcome with respect to an
individual (regardless of whether they are a member of the sampled
population or not)

Take the chance of dying in a car crash if 1 of 5000 people in a
city/state/county/world died last year. Any one individual is not average.
They are unique. They might have a habit of driving while texting with their
open bottle of beer between their legs and not wearing a seat belt. Another
might not drive during rush hour amongst those pretty young things putting
on their makeup (or guys shaving) or people texting with their coffee
between their legs.

Same for paddling and paddlers. Do you judge the situation and go for coffee
instead? Do you take adequate safety precautions (skills or gear or skills
with gear?) Are you fit or flabby? Is the water warm or cold? Calm or
angry?

For a more detailed explanation about what you can and can't infer about the
future or even alternate populations from a given sample see:

Wiki on statistical
frame<http://en.wikipedia.org/wiki/Sampling_(statistics)#Sampling_frame>

If you don't know how the sample was taken, then you can't know to which use
you may legitimately put the statistic. I am going to stop short
of inferring that you intend to plump up an argument with a "statistic" that
sounds good but really doesn't apply, because all I can say is that a lot
of, maybe most of, and possibly all the statistics quoted by the talking
heads on TV (and the web is worse) are misused and misleading. But that
doesn't allow me to predict what you might do, now does it?  ;->

Oh, and extra points to anyone who knows from whom I borrowed the title of
this pet peeve rant.


On Thu, Jan 21, 2010 at 5:15 AM, MATT MARINER BROZE
<marinerkayaks_at_msn.com>wrote:

> I wrote:
> >If you knew the odds of drowning while kayaking during each year were one
> in
> >5000 would you paddle?
> >If you live in an urban area that is about the average risk of dying in an
> >auto accident (each year) if you drive a car.
>
> Daniel: gypsy_trillium_at_yahoo.ca wrote".
> >>>>>>>Are these quotable and verifiable statistics Matt? If they are, I've
> a
> use
> for them. Thanks!
> ~~~daniel~<<<<<<<<<<<<<<<
>
> I first read that statistic in a book called "The Myth of Heterosexual
> Aids" copyrigt 1990. At that time most writers on the subject were predicting a
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