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Topic: Visualizing where to draw the standard deviation line
Replies: 63   Last Post: Jun 19, 2012 12:12 PM

 Messages: [ Previous | Next ]
 Snit Posts: 25 Registered: 6/15/12
Re: Visualizing where to draw the standard deviation line
Posted: Jun 19, 2012 2:11 AM

On 6/18/12 9:27 PM, in article
Knight" <onionknightgot@gmail.com> wrote:

> On Jun 15, 3:29 am, Onion Knight <onionknight...@gmail.com> wrote:
>> There has been a debate in COLA as to if the distance from the mean to
>> the inflection point is where the standard deviation should be.  One
>> person is saying that this distance is where the line should always be
>> drawn while one other is saying the distance from the mean is
>> irrelevant and it is only the area under the curve that matters.  The
>> first agrees the area under the curve is also always the same but
>> insists the inflection point is where the line should be drawn.  He
>> even produced a video to show his
>> and he showed what he claimed was an incorrectly depicted image and
>> showed where he says it should be http://tmp.gallopinginsanity.com/sd.png
>>
>> I admit this goes over my head. Is he correct? Is it really that easy
>> that you can just look at the inflection point and see where the
>> standard deviation should be drawn? I was never taught that in school.
>> He did provide other examples where he says the depictions are wrong.
>> I will quote him.
>>
>> <http://www.footballguys.com/shickstandard_1_files/image009.gif> From:
>> <http://www.footballguys.com/shickstandard_1.htm>
>> Lines clearly not at a far enough distance from the mean, esp. on the
>> graph to the right.
>>
>> <http://www.gsseser.com/images/StandardDeviation2s.gif> From:
>> <http://www.gsseser.com/Deviation.htm>

>
>> Lines clearly not at a far enough distance from the mean.
>>
>> <http://www.udel.edu/htr/Statistics/Images/Class12/normal2.gif> From:
>> <http://www.udel.edu/htr/Statistics/Notes/class12.html>
>> Lines clearly shown at way too far a distance from the mean (this is
>> the one I use in my example).
>>
>> Those of you who know math and statistics better can you help me to
>> know who to believe? Seems a Linux based group might not be the best
>> place to get this type of information. I do have them included in the
>> list of newsgroups so the people in the debate can see the answers.

>
> Thanks to all who contributed. The answer has become clear that Snit
> was right and Steve and his sock puppet CC are both just trolling
> Snit. After dozens of posts of idiotic attacks they can't find flaw
> with his claims.

Correct. And sadly Carroll and cc cannot admit they are wrong so they turn
all discussions into endless attacks. They cannot just be honest and admit
they goofed.

--
The indisputable facts about that absurd debate: <http://goo.gl/2337P>
cc being proved wrong about his stats BS: <http://goo.gl/1aYrP>
7 simple questions cc will *never* answer: <http://goo.gl/cNBzu>
cc again pretends to be knowledgeable about things he is clueless about.

Date Subject Author
6/14/12 Onion Knight
6/15/12 Ray Koopman
6/15/12 Snit
6/15/12 Frederick Williams
6/15/12 Snit
6/16/12 Lusotec
6/15/12 Kaba
6/15/12 Snit
6/15/12 White Spirit
6/15/12 Kaba
6/15/12 Snit
6/15/12 Kaba
6/15/12 Snit
6/15/12 Kaba
6/15/12 Snit
6/15/12 Kaba
6/15/12 Snit
6/15/12 Steve Carroll
6/15/12 Onion Knight
6/15/12 Snit
6/15/12 Onion Knight
6/15/12 Kaba
6/15/12 Snit
6/15/12 Steve Carroll
6/15/12 Onion Knight
6/16/12 Frederick Williams
6/17/12 Onion Knight
6/17/12 Steve Carroll
6/17/12 Snit
6/15/12 Onion Knight
6/15/12 Snit
6/15/12 Steve Carroll
6/16/12 Frederick Williams
6/15/12 Onion Knight
6/15/12 Snit
6/15/12 Steve Carroll
6/15/12 Onion Knight
6/15/12 Snit
6/15/12 Onion Knight
6/15/12 Snit
6/16/12 Frederick Williams
6/19/12 Onion Knight
6/19/12 Snit
6/18/12 Onion Knight
6/18/12 Frederick Williams
6/18/12 Snit
6/18/12 Steve Carroll
6/18/12 Onion Knight
6/18/12 Snit
6/18/12 Steve Carroll
6/19/12 Onion Knight
6/19/12 Snit
6/19/12 Steve Carroll
6/15/12 Snit
6/15/12 Onion Knight
6/15/12 Snit
6/15/12 Steve Carroll
6/15/12 Onion Knight
6/15/12 Snit
6/18/12 Steve Carroll
6/19/12 Onion Knight
6/19/12 Snit