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30 Cards in this Set

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