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attributes a characteristic to some members of a particular class
a prediction defended with reasons
argument from authority
asserts a claim and then supports the claim by citing some presumed authority or witness who has said that the claim is true
asserts or denies something is the cause of something else
argument resting on statistical evidence
argument from analogy
based on a comparison or similarity between two or more things
a logical statement containing two parts: hypothesis and conclusion.
an educated guess
Tells if your hypothesis was correct; supported or not supported
A statement that is proved by reasoning deductively from already accepted statements.
An example that proves a conjecture false
Numbered Logical argument that shows a statement is true
Law of Detachment
is p-->q is true, then p is true, and q is true
Law of Syllogism
if p-->q and q-->r are true, then p-->r is true
(noun) A statement that switches the hypothesis and conclusion
a + (-a) = 0 = (-a) + a OR a * 1/a = 1 = 1/a * a; a cant be 0
when the hypothesis and the conclusion of a converse of a conditional statement are negated
To make a statement have its opposite meaning. Usually adds or removes the word "not" to the statement.
Conditional statement where both the converse and inverse are true and uses the phrase "if and only if"
Two statements joined by the word AND. Only true when both statements are true.
Two statements joined by the word OR. Only false when both statements are false.
A table showing all possible combinations of truth and falsehood for a compound statement.