an argument in which a conclusion about a group is allegedly established as probably true by observing a sample of that group.
argument by analogy
an argument in which a conslusion about an object or event is allegedly established as probably true by noting similarities between it and another object or event.
the mental acceptance of a statment as true
that which can be stated in a declarative sentence and is thereby true or false; these are also known as an "assertion", "claim" or "statement", and are often signified by capital letters such as P, Q, and R
a statement of the form 'P and Q'; these statments are true if both P and Q are true