Logic Rules : Inference and Replacement

The science of correct reasoning is called

An observation based on opinion or feelings.

• subjective

• objective

• quantitative

• qualitative

An observation based on proven facts or data.

• subjective

• objective

• quantitative

• qualitative

Logical interpretation of what you observe based on experience.

• quantitative observation

• qualitative observation

• inference

• prediction

If I comb my hair, then I won't have tangles.

I have tangles.

Therefore, I didn't comb my hair.

Which law is being demonstrated?

• Law of Detachment

• Law of Syllogism

• Law of Contrapositive

• No law

If I see a black bear, then I will scream.

If I scream, then the bear will run away.

Therefore, if I see a black bear, it will run away.

Which law is being demonstrated?

• Law of Detachment

• Law of Syllogism

• Law of Contrapositive

• No law

If I go camping, then I need to pack my tent.

I went camping.

Therefore, I packed my tent.

Which law is being demonstrated?

• Law of Detachment

• Law of Syllogism

• Law of Contrapositive

• No law

If you need help, then you stay after class.

If you stay after class, then you ask questions.

What is the logical conclusion?

• Therefore, if you stay after class, then you need help.

• Therefore, if you ask questions, then you need help.

• Therefore, if you need help, then you ask questions.

• There is no logical conclusion.

If you go to the mall, then you will spend money.

You didn't spend any money today.

What is the logical conclusion?

• Therefore, you didn't go to the mall.

• Therefore, you don't have any money.

• Therefore, you went to the mall.

• There is no logical conclusion.

Tags

CCSS.RI.8.1

CCSS.RI.8.8

CCSS.RL.11-12.1

CCSS.RL.8.1

CCSS.RL.9-10.1

What does Inference mean?

• finding details in a story
• Use clues and what you already know to come up with an idea
• Giving a reason for your answer
• Using what I know

Tags

CCSS.RI.11-12.2

CCSS.RI.9-10.1

CCSS.RL.11-12.1

CCSS.RL.8.1

CCSS.RL.9-10.1