Can a deductively valid argument?

A deductive argument is said to be valid if and only if it takes a form that makes it impossible for the premises to be true and the conclusion nevertheless to be false. A deductive argument is sound if and only if it is both valid, and all of its premises are actually true. Otherwise, a deductive argument is unsound.

What is a deductively valid?

An argument is deductively valid if, and only if, it’s not possible for it to be the case that both, 1) all of its premises are true and 2) it’s conclusion is false, as it were, at the same time. This will be our official definition of deductive validity.

What is a deductively valid argument quizlet?

-a deductively valid argument is such that if its premises are true, its conclusions must be true. That is,if the premises are true, there’s no way that the conclusion can be false. -can have false premises and false conclusion, false premise and true conclusion, or true premise and true conclusion.

What is an argument that is not valid?

Invalid: an argument that is not valid. We can test for invalidity by assuming that all the premises are true and seeing whether it is still possible for the conclusion to be false.

What is a strong argument?

Definition: A strong argument is a non-deductive argument that succeeds in providing probable, but not conclusive, logical support for its conclusion. A weak argument is a non-deductive argument that fails to provide probable support for its conclusion.

What is an inductively strong argument?

An inductive argument is an argument that is intended by the arguer to be strong enough that, if the premises were to be true, then it would be unlikely that the conclusion is false. So, an inductive argument’s success or strength is a matter of degree, unlike with deductive arguments.

Can a deductively valid argument have false premises?

A valid argument can have false premises; and it can have a false conclusion. Since a sound argument is valid, it is such that if all the premises are true then the conclusion must be true. Since a sound argument also has all true premises, it follows that a sound argument must have a true conclusion. 8.

Is a valid argument always true?

FALSE: A valid argument must have a true conclusion only if all of the premises are true. So it is possible for a valid argument to have a false conclusion as long as at least one premise is false. A sound argument must have a true conclusion. TRUE: If an argument is sound, then it is valid and has all true premises.

What is a valid deductive argument?

Validity: A valid deductive argument is an argument in which the premises support the conclusion in such a way that, if the premises are assumed to be true, the conclusion must be true. In a valid deductive argument, if the premises are true it is logically impossible for the conclusion to be false.

What are non – deductive arguments?

Definition: A non-deductive argument is an argument for which the premises are offered to provide probable – but not conclusive – support for its conclusions. In a good non-deductive argument, if the premises are all true, you would rightly expect the conclusion to be true also,…

What are valid and invalid arguments?

A valid argument is one where the premises, if they were true, would guarantee the truth of the conclusion. Invalid arguments are ones where there could be circumstances where the premises are true but the conclusion is false. Consider these: F. 1.

What is an example of a valid argument?

Therefore, Tom Cruise is a robot. This is an example of a valid argument. An argument is VALID if it has the following hypothetical or conditional property: IF all the premises are true, then the conclusion CANNOT be false.