Prep for HONOR 101 Exam 3 Flashcards
The branch of deductive reasoning that deals with logical relationships among statements.
Propositional logic
An assertion that something is or is not the case.
Statement
A statement containing no other statements as constituents. Ex: I have a lot of homework.
simple statement
A statement composed of at least two simple statements.
Compound statement
A way to confirm the validity of a complex argument by deducing its conclusion using simple, valid argument forms.
Method of proof
Two simple statements joined by a connective to form a compound statement. Each of the component statements is called a conjunct. p&q ex: Alice rode her bike, and John walked.
Conjunction
Asserting that either p or q is true and that even if one of the statements is false, the whole argument is still true. pvq ex: Either Alice rode her bike, or John walked.
Disjunction
Denial of a statement, which we indicate with the word “not” or a term that means the same thing. ~p ex: Alice did not ride her bike.
Negation
The basic form of a condition is “if… then…” p → q ex: If Alice rode her bike, then John walked.
Conditional
Reasoning from premises about individual members of a group to conclusions about the group as a whole. Ex: X percent of the observed members of group A have property P. Therefore, X percent of all members of group A probably have property P.
Enumerative induction
The whole collection of individuals under study. Ex: All students
Target group (target population)
The observed members of the target group. Ex: All students in Selnick’s class
Sample (sample member)
The property, or characteristic, that is of interest in the target group. Ex: Examining the scores of students at CSUF compared to other colleges
relevant property (property in question)
The fallacy of drawing a conclusion about a target group based on an inadequate sample size.
Hasty generalization
Selecting a sample to ensure every member of the target group has an equal chance of selection
Random sampling
A non-random sample in which subjects choose themselves
self-selecting sample
The variation between the values derived from a sample and the true values of the whole target group.
Margin of error
The probability that the sample will accurately represent the target group within the margin of error.
Confidence level