Statistical Syllogism
____% of W are F (F=attributive/character/property)
J is a W
So, J is F
51% to 99% makes it strong, if it makes sense.
Arguments from Authority
Testing…
1. Is the authority one that is relevant for the subject?
2. Do I have additional information?
Argument from Analogy
A is similar to B
B has property P.
So, A has property B.
Testing…
1. Are similarities relevant to issue?
2. Are there relevant dissimilarities?
3. Are there other things similar to B in the relevant respects that lack property P?
Induction by Enumeration
____% of a SAMPLE of A are B.
So, approximately ___% of A are B.
Testing…
1. Is the sample random or biased?
2. Is the sample big enough to be representative?
3. Was the sample misled by the question(s) asked?
Recognizing Inductive Arguments in general
(strong/weak) - spectrum
and
(cogent/uncogent) - factually correct/strong
= does not guarantee truth of conclusion
Depends on FORM.