Critical Thinking D265 WGU Practice Questions and Answers

What is meant by validity or strength of an argument? Generally, Strong Arguments are ones that are convincing. And an argument is valid if the premises(if true) provide proof of the conclusion. What are the different types of inferences? - Deduction - Induction -Abduction Inference A conclusion one can draw from the presented details. deduction forming a general conclusion based on specific observations Induction forming a specific conclusion based on general premise. Abduction reasoning rules out explanations until most plausible remains truth A proposition that accurately represents reality. validity In a good deductive argument structure, when true premises make the conclusion necessarily true. invalidity One or two of the premises are false, thus making the conclusion false. Soundness The deductive argument is valid, and all premises are true premises. Unsoundness When the argument is invalid or the premises are false. How is truth connected to propositions? The relationship that holds between a proposition and its corresponding fact. If a proposition is true, then the conclusion is true, but if it's false then it's false. valid argument form an argument form in which every substitution instance is a valid (true) argument invalid argument form an argument form that has some invalid (false) substitution instances