Originally posted by Mengano
Quote: | Originally posted by Sandlefoot
It is much safer in Baja than NOB |
As long as you don't look at the government's crime statistics:
Biased sample fallacy:
Description of Biased Sample
This fallacy is committed when a person draws a conclusion about a population based on a sample that is biased or prejudiced in some manner. It has
the following form:
Sample S, which is biased, is taken from population P.
Conclusion C is drawn about Population P based on S.
The person committing the fallacy is misusing the following type of reasoning, which is known variously as Inductive Generalization, Generalization,
and Statistical Generalization:
X% of all observed A's are B''s.
Therefore X% of all A's are Bs.
The fallacy is committed when the sample of A's is likely to be biased in some manner. A sample is biased or loaded when the method used to take the
sample is likely to result in a sample that does not adequately represent the population from which it is drawn.
Biased samples are generally not very reliable. As a blatant case, imagine that a person is taking a sample from a truckload of small colored balls,
some of which are metal and some of which are plastic. If he used a magnet to select his sample, then his sample would include a disproportionate
number of metal balls (after all, the sample will probably be made up entirely of the metal balls). In this case, any conclusions he might draw about
the whole population of balls would be unreliable since he would have few or no plastic balls in the sample.
[Edited on 11-28-2011 by Mengano] |