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Originally posted by iamcamouflage
reply to post by OldThinker
I'm a little upset with myself for even posting in this thread but I feel that I must.
As several posters have pointed out, you are making a mistake in assuming that we have a large enough sample in order to apply variation to the universe.
The following are quotes from the article you linked in your OP. This is your own source.
How does one tell the difference between special cause variation and common cause variation, and avoid the mistakes that can ensue from misunderstanding these concepts? The answer lies in the use of control charts where data is collected and analyzed with respect to trends and patterns that can be acted upon. In the 1920s, Walter Shewhart developed the idea of three-sigma control charts. Control limits—which are generated by the data itself, collected over time—clarify the distinction between common cause and special cause variation.
Notice the author states that telling the difference between special cause and common cause is determined with the "use of control charts where data is collected and analyzed with respect to trends and patterns that can be acted upon."
So I must ask what data you are using to come to your conclusion?
In logic, an argumentum ad populum (Latin: "appeal to the people") is a fallacious argument that concludes a proposition to be true because many or all people believe it; it alleges: "If many believe so, it is so."
This type of argument is known by several names, including appeal to the masses, appeal to belief, appeal to the majority, appeal to the people, argument by consensus, authority of the many, and bandwagon fallacy, and in Latin by the names argumentum ad populum ("appeal to the people"), argumentum ad numerum ("appeal to the number"), and consensus gentium ("agreement of the clans"). It is also the basis of a number of social phenomena, including communal reinforcement and the bandwagon effect, the spreading of various religious beliefs, and of the Chinese proverb "three men make a tiger".
There are more things in heaven and earth, Horatio, Than are dreamt of in your philosophy. Hamlet Act 1, scene 5, 159–167
Originally posted by Grumble
OP has no conception of the proper use of, and the underlying assumptions of the statistical methods in question.
Originally posted by awake_and_aware
I don't get it, i think it's false.
Originally posted by MrXYZ
Tell me OT, why is it that you continue to ask the question when people already told you it's scientifically and statistically irrelevant thanks to your sample size?
[edit on 22-8-2010 by MrXYZ]