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Is an argument valid or invalid?
An argument is valid if the conclusion logically follows from the premises. It is invalid if the conclusion does not logically follow from the premises.
Can a deductively argument have false premises?
Yes, a deductive argument can have false premises. However, the conclusion does not follow logically if the premises are false, making the argument unsound.
If a deductive argument is valid and its premises are true?
If a deductive argument is valid and its premises are true, then the conclusion must also be true. This is because the structure of the argument guarantees that if the premises are true, then the conclusion must follow logically.
What is the difference between valid and invalid arguments?
A valid argument is one where the conclusion logically follows from the premises, while an invalid argument is one where the conclusion does not logically follow from the premises.
What is deductive argument?
A deductive argument is and argument that the premises are claimed to give sufficient support for the conclusion to follow. The premises are repeated in the conclusion. Often the conclusion does not have any new information. eg The moon is circular when it is full the moon is circular therefore the moon is full.
Is an argument valid or invalid?
An argument is valid if the conclusion logically follows from the premises. It is invalid if the conclusion does not logically follow from the premises.
Can a deductively argument have false premises?
Yes, a deductive argument can have false premises. However, the conclusion does not follow logically if the premises are false, making the argument unsound.
If a deductive argument is valid and its premises are true?
If a deductive argument is valid and its premises are true, then the conclusion must also be true. This is because the structure of the argument guarantees that if the premises are true, then the conclusion must follow logically.
What is the difference between valid and invalid arguments?
A valid argument is one where the conclusion logically follows from the premises, while an invalid argument is one where the conclusion does not logically follow from the premises.
How do you evaluate an argument for soundness?
To evaluate an argument for soundness, first ensure it is valid, meaning that if the premises are true, the conclusion must necessarily follow. Next, assess the truthfulness of its premises; all premises must be accurate for the argument to be sound. An argument is considered sound if it is both valid and has true premises, leading to a true conclusion.
What is deductive argument?
A deductive argument is and argument that the premises are claimed to give sufficient support for the conclusion to follow. The premises are repeated in the conclusion. Often the conclusion does not have any new information. eg The moon is circular when it is full the moon is circular therefore the moon is full.
Can An argument can have suppressed or missing premises?
Yes, an argument can have suppressed or missing premises. An argument with suppressed premises does not explicitly state all the premises needed for the conclusion to logically follow, while an argument with missing premises does not include all the premises required for a valid argument. This can result in potential gaps or weaknesses in the reasoning presented.
What does a valid argument contain?
A valid argument contains a logical structure in which the premises logically lead to the conclusion. This means that if the premises are true, the conclusion must also be true. Additionally, the argument must follow the rules of logic, such as modus ponens or modus tollens.
Can an argument with a true premises and true conclusion be invalid?
Yes. It could be a coincidence that the premises and conclusion are all true. For example, here is an argument: 1. It is true that if a person belongs to the Republican Party they must be an American. 2. Mitt Romney is an American. 3. Therefore, the conclusion is that Mitt Romney is a Republican. Although both premises and the conclusion are true, the argument is not valid. That is because it is possible to imagine an argument in this form where the premises were true, but the conclusion is not. (Imagine if the second premise were "Barack Obama is an American" which is true, leading to the conclusion "Barack Obama is a Republican" which is false.)
When these types of words are used in an argument they are the indicator that a premise has been made and a conclusion will soon follow?
Conclusion indicators
Why cant you have an argument which is invalid and sound?
An argument that is invalid is one where the conclusion does not logically follow from the premises. A sound argument is one that is valid and has true premises. So, by definition, an argument cannot be both invalid and sound at the same time because for an argument to be sound it must be valid.
If deductive argument is invalid then?
It depends on what you are deducing and why. It just means your argument fails and anything depending on it does too. So you need to either find a valid argument or show that one cannot be formed.
