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30 Cards in this Set
- Front
- Back
the basic unit of concern in categorical logic is the...
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statement component
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the four standard forms of categorical statements...
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all S are P; some S are P; some S are not P; no S are P
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the standard form statement No S are P is a...
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universal negative
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a particular negative statement is designed by the letter...
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O
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the pattern of standard-form categorical statements is...
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quantifier, subect term, copula, predicate term
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an A-statement is called
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universal affirmative
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the singular statement "john brown is a plumber" is translated into the following statement...
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all persons identical with john brown are plumbers
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a syllogism is a deductive argument made up of...
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three statements- two premises and a conclusion
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a categorical syllogism has...
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exactly three terms, with each on appearing twice in the argument
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the easist way to check the validity of a categorical syllogism is to...
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draw a three-circle venn diagram
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in a categorical syllogism, the middle term appears in each premise but not the conclusion.
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true
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in a valid categorical syllogism, if there is on particular premise there must be a universal conclusion
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false
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"some S are not P" is an I-statement
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false
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"no S are P" is an O-statement.
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false
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"all cars are not fords" is expressed in standard form
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false
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in a valid categorical syllogism, if there is one negative premise there must be a negative conclusion.
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true
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"all trucks are chevrolets" is a universal negative statement
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false
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the copula is always either "are" or "are not"
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true
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in categorical statments, "some" means "at least one"
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true
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when checking the validity of a categorical syllogism, if the venn diagram reflects the assertion in the conclusion, the argument is valid.
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true
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in a valid categorical syllogism the truth of the conclusion is contained in the truth of the premises
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true
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a valid categorical syllogism cannot have two negative premises
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true
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a valid categorical syllogism can have more than two premises
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false
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a valid categorical syllogism cannot have two universal premises.
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false
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identify this statement: "some mathematicians are good politicians."
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particular affirmative
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identify this statement: "several politicians are egomaniacs."
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particular affirmative
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identify this statement: "there are nursing students at ASU."
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particular affirmative
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identify this statement: "a few rock stars are not maniacs."
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particular negative
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in a venn diagram, an X indicates "there is at least one."
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true
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in a venn diagram a shaded area indicates and empty class.
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true
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