LSAT Logical Reasoning Deductive and Inductive Arguments Quiz

This follows the valid deductive form: all X are Y, Z is X, therefore Z is Y. The conclusion necessarily follows from the premises.

The argument moves from specific observed instances to a general conclusion, which is characteristic of inductive reasoning and subject to counterexample.

This is valid modus tollens: if P then Q, not Q, therefore not P. It is logically sound, not a fallacy.

Inductive arguments about groups do not guarantee individual cases. Marco might be an exception to the general pattern.

This follows the valid form of categorical syllogism. The premises guarantee the conclusion.

The argument uses observed data to infer a probable conclusion about an individual case—characteristic of strong inductive reasoning.

This is modus ponens: if P then Q, P is true, therefore Q is true. The argument is valid.

The argument follows: all X have Y, Z is X, therefore Z has Y. This is a valid categorical syllogism.

Inductive generalization depends on sample size and representativeness. Studied philosophers may not reflect all philosophers.

Modus tollens is valid: if P then Q, not Q, therefore not P. The reasoning is logically sound.

The argument incorrectly infers that because poor design leads to rejection, rejection implies poor design. This reverses the logical direction.

The argument reverses the logical direction. A true conclusion does not guarantee the argument is valid or its premises are true.

Statistical sampling uses inductive reasoning to generalize from a sample to a population with stated confidence levels.

This correctly applies modus tollens: if P then Q, not Q, therefore not P. The reasoning is valid.

Validity guarantees that true premises lead to a true conclusion; this is the defining feature of deductive logic.