deductive inductive

A sound argument is a valid deductive argument with true premises

A deductive argument cannot be both valid and unsound

All valid deductive arguments are sound arguments

A deductive argument can be either valid or invalid and still have true premises

When the conclusion of a deductive argument is true, the argument must be sound

When the premises of a deductive argument are true, the conclusion is always true as well

If a deductive argument is sound, then the conclusion must be true

A deductive argument could have a false premise and still be sound

In a valid deductive argument the conclusion could be true or false

An invalid deductive argument could have all true statements in it