Study Questions for Quiz 1 1. The Concept of Validity (20 points) a. You will be asked to give the two different definitions of validity given in the lecture.

Slides:

Advertisements

Similar presentations

Formal Criteria for Evaluating Arguments

Advertisements

Valid arguments A valid argument has the following property:

Test the validity of this argument: Some lawyers are judges. Some judges are politicians. Therefore, some lawyers are politicians. A. Valid B. Invalid.

1 Valid and Invalid arguments. 2 Definition of Argument Sequence of statements: Statement 1; Statement 2; Therefore, Statement 3. Statements 1 and 2 are.

CPSC 121: Models of Computation Unit 6 Rewriting Predicate Logic Statements Based on slides by Patrice Belleville and Steve Wolfman.

Writing Tutor: Deductive Reasoning Think More... Write More Dr. Otto In Analyze a Problem, I identified two gaps – information gap and logical gap – that.

Midterm Review CS 4705 Julia Hirschberg.

True/False. False True Subject May Go Here True / False ? Type correct answer here. Type incorrect answer here.

For Monday, read Chapter 4, Sections 1 and 2. Nongraded homework: Problems on pages Graded HW #4 is due on Friday, Feb. 11, at the beginning of.

For Friday, read Chapter 3, section 4. Nongraded Homework: Problems at the end of section 4, set I only; Power of Logic web tutor, 7.4, A, B, and C. Graded.

MA 102 Statistical Controversies Monday, February 18, 2002 Today: Discuss Chapter 9 concepts and exercises Review Part 1 of the text Test 1 question types.

Part 2 Module 3 Arguments and deductive reasoning Logic is a formal study of the process of reasoning, or using common sense. Deductive reasoning involves.

MATERI II PROPOSISI. 2 Tautology and Contradiction Definition A tautology is a statement form that is always true. A statement whose form is a tautology.

Validity All UH students are communists. All communists like broccoli. All UH students like broccoli.

GLE Explore the concept of premises, including false premises. Intro to Logic.

Truth-Table Definition of Validity An argument is truth-table valid if it is impossible for the premises to all be True and the conclusion False. I.e.,

0 Validity & Invalidity (Exercises) December 23, 2005.

Reasoning and Critical Thinking Validity and Soundness 1.

Question of the Day!  We shared a lot of examples of illogical arguments!  But how do you make a LOGICAL argument? What does your argument need? What.

Type your question here. Type Answer Type your question here. Type Answer.

Logical Reasoning:Proof Prove the theorem using the basic axioms of algebra.

2.8 Methods of Proof PHIL 012 1/26/2001.

0 Validity & Invalidity (Exercises) All dogs have two heads. 2. All tigers are dogs. ___________________________________ 3. All tigers have two.

Philosophical Method  Logic: A Calculus For Good Reason  Clarification, Not Obfuscation  Distinctions and Disambiguation  Examples and Counterexamples.

Thinking Mathematically Arguments and Truth Tables.

Validity, Soundness, Strength, Cogency Jason Chang Critical Thinking.

Higher / Int.2 Philosophy 12. Our Learning  Fallacy Reminder  Summary following Homework NAB  Class NAB.

(not about ships this time)

Study Questions for Quiz 4 The exam has four parts: 1. (16 points) Consistency and Completeness 2. (18 points) Translation 3. (34 points) Proving Rules.

Study Questions for Quiz 5 The exam has four parts: 1. (32 points) Truth Tables 2. (48 points) Truth Trees 3. (10 points) Review of Highly Recommended.

Quiz Title Your name goes here. Question 1 Click here for answer Click here for answer Go to question 2 Go to question 2.

Uniqueness Quantifier ROI for Quantified Statement.

Analyzing Arguments : Introduction to Philosophy June 1, 2009 Instructor: Karin Howe Carnegie Mellon University.

Chapter 3 Basic Logical Concepts (Please read book.)

Valid and Invalid Arguments

a valid argument with true premises.

Lecture Notes 8 CS1502.

A Crash Course in Logic : Introduction to Philosophy

Jeffrey Martinez Math 170 Dr. Lipika Deka 10/15/13

Rule Exercises Status of the Ball Definitions and Rule 15

Rule Exercises Status of the Ball Definitions and Rule 15

Factors, multiple, primes: Factors from prime factors

Evaluating truth tables

3 Logic The Study of What’s True or False or Somewhere in Between.

Validity and Soundness

Testing for Validity and Invalidity

Factors, multiple, primes: Prime factors

Review To check an argument with a tree:.

Midterm Discussion.

Discrete Mathematics Lecture # 8.

The most important idea in logic: Validity of an argument.

Deductive Arguments: Checking for Validity

Validity & Invalidity Valid arguments guarantee true conclusions but only when all of their premises are true Invalid arguments do not guarantee true conclusions.

Take the quiz. Score 3 or higher, it’s worth a look!

Study Questions for Quiz 2

6.4 Truth Tables for Arguments

Logical Fallacies.

Arguments in Sentential Logic

SUMMARY Logic and Reasoning.

Chapter 2 Sets Active Learning Lecture Slides

Propositional Logic 1) Introduction Copyright 2008, Scott Gray.

Factors, multiple, primes: Multiples

Fractions: Simplifies to a unit fraction?

If there is any case in which true premises lead to a false conclusion, the argument is invalid. Therefore this argument is INVALID.

Validity and Soundness, Again

Standard form: In standard form?

3.5 Symbolic Arguments.

Coordinates: Naming 2D coordinates – quadrant 1

If there is any case in which true premises lead to a false conclusion, the argument is invalid. Therefore this argument is INVALID.

Sample Proofs 1. S>-M A 2. -S>-M A -M GOAL.

Presentation transcript:

Study Questions for Quiz 1 1. The Concept of Validity (20 points) a. You will be asked to give the two different definitions of validity given in the lecture on validity. Answers = 1. Assuming the premises are all true, the conclusion has to be true. 2. It is impossible for all the premises to be true and the conclusion to be false. b. There will be about 5 True-False questions like these: 1. Every invalid argument has a false conclusion. Answer = F 2. Every sound argument is valid. Answer = T (more on next slide)

Study Questions for Quiz 1 2. Translation (28 points) There will be 4 or 5 Translation exercises such as the following: a. IVAN can come, provided that JOHN will if MARY does. Answer = (M>J)>I b. JOHN's staying will result in MARY's leaving. So Mary will leave because John will stay. Answer = J>M, J | M (more on next slide)

Study Questions for Quiz 1 3. (22 points) You will be asked to complete 3 proofs using > Out. Here is a sample. (R>O)>(O>P), R, R>O | P Answer = (1) (R>O)>(O>P) A (2) R A (3) R>O A (4) O 3,2 >O (5) O>P 1,3 >O (6) P 5,4 >O