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Logical  Fallacy: a error in reasoning
  (adj)     (noun)

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Statement #130 Discussion

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Below is the statement as it appears with the fallacy marked as correct. You can see the totals of most frequent responses to this statement. And after reading the any discussion going on below, you can select your choice(s) for the correct answer. For now, whoever posts each statement can update corrections.
I'm blonde therefore I must not be very smart.
Hasty Generalization
AKA Fallacy of Insufficient Statistics, Fallacy of Insufficient Sample, Leaping to A Conclusion, Hasty Induction

Category: Fallacies of Presumption

This fallacy is committed when a person draws a conclusion about a population based on a sample that is not large enough. It has the following form:

  1. Sample S, which is too small, is taken from population P.
  2. 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:
  1. X% of all observed A's are B's.
  2. Therefore X% of all A's are B's.
The fallacy is committed when not enough A's are observed to warrant the conclusion. If enough A's are observed then the reasoning is not fallacious.

Small samples will tend to be unrepresentative. As a blatant case, asking one person what she thinks about gun control would clearly not provide an adequate sized sample for determining what Canadians in general think about the issue. The general idea is that small samples are less likely to contain numbers proportional to the whole population. For example, if a bucket contains blue, red, green and orange marbles, then a sample of three marbles cannot possible be representative of the whole population of marbles. As the sample size of marbles increases the more likely it becomes that marbles of each color will be selected in proportion to their numbers in the whole population. The same holds true for things others than marbles, such as people and their political views.

Since Hasty Generalization is committed when the sample (the observed instances) is too small, it is important to have samples that are large enough when making a generalization. The most reliable way to do this is to take as large a sample as is practical. There are no fixed numbers as to what counts as being large enough. If the population in question is not very diverse (a population of cloned mice, for example) then a very small sample would suffice. If the population is very diverse (people, for example) then a fairly large sample would be needed. The size of the sample also depends on the size of the population. Obviously, a very small population will not support a huge sample. Finally, the required size will depend on the purpose of the sample. If Bill wants to know what Joe and Jane think about gun control, then a sample consisting of Bill and Jane would (obviously) be large enough. If Bill wants to know what most Australians think about gun control, then a sample consisting of Bill and Jane would be far too small.

People often commit Hasty Generalizations because of bias or prejudice. For example, someone who is a sexist might conclude that all women are unfit to fly jet fighters because one woman crashed one. People also commonly commit Hasty Generalizations because of laziness or sloppiness. It is very easy to simply leap to a conclusion and much harder to gather an adequate sample and draw a justified conclusion. Thus, avoiding this fallacy requires minimizing the influence of bias and taking care to select a sample that is large enough.

One final point: a Hasty Generalization, like any fallacy, might have a true conclusion. However, as long as the reasoning is fallacious there is no reason to accept the conclusion based on that reasoning.

Click For Fallacy Description

 809 Total Answer Attempts   54%
 433 Correctly Popped Fallacies
 376 Incorrectly Un/Popped
posted by TexasLadyMarti     
( Random Image )

Most Common Responses

 
433 - Hasty Generalization
58 - Biased Generalization
54 - Genetic Fallacy
23 - Guilt by Association
20 - Confusing Cause and Effect
20 - Appeal to Belief
18 - Appeal to the Consequences of a Belief
17 - Ad Hominem Tu Quoque
14 - Ad Hominem
13 - Circumstantial Ad Hominem
12 - Appeal to Tradition
12 - Appeal to Ridicule
11 - Fallacy of Composition
10 - Personal Attack
9 - False Dilemma
8 - Appeal to Pity
8 - Red Herring
6 - Begging the Question
6 - Post Hoc
6 - Appeal to Common Practice
5 - Fallacy of Division
5 - Ignoring a Common Cause
5 - Relativist Fallacy
4 - Poisoning the Well
4 - Burden of Proof
4 - Appeal to Flattery
4 - Appeal to Popularity
4 - Appeal to Novelty
3 - Slippery Slope
3 - Special Pleading
3 - Gambler's Fallacy
3 - Misleading Vividness
2 - Appeal to Fear
1 - Peer Pressure
1 - Appeal to Authority

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No Answer assigned?
Apart from this fallacy question not having assigned any answer, I had chosen the option "Appeal to belief" not having been given the options Hasty Generalization, or Genetic Fallacy.

3.15.15 20:28 by Muessin
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  + Reply 1 comment downstream. Please read it before replying.

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Thanks for this catch, Muessin! I'll patch the bug allowing a few examples to be posted without an answer assigned. This is a tough example, could go a few ways, but for now I've assigned it as Hasty Generalization. Sound right to you, TexasLadyMarti?

3.15.15 20:52 by wikiworldorder
0      0

  + Reply



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Apart from this fallacy question not having appointed any answer, I had chosen the option "Appeal to belief" not having been given the options Hasty Generalization, or Genetic Fallacy.

3.15.15 20:27 by Muessin
0      0

  + Reply 0 comments downstream.



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