Inductive and Deductive Reasoning
Transcript Inductive and Deductive Reasoning
Inductive and Deductive
• Premise: statement upon which an argument
is based or from which a conclusion is drawn
• Premise is either true or false
• Arguments: Consist of one or more premises
and one conclusion or claim, which is drawn
from those premises
Deductive Reasoning: In deductive, the conclusion is based on one or
more premises that state a generalization. It usually states a generalization or
fact and ends with a conclusion about something specific.
Rover is a
1. All women like
2. Ms. Rathmann
is a woman.
3. Therefore, Ms.
Inductive Reasoning: Works the other way around. Moves from
premises that state specific facts and observations to a broader
generalization or conclusion drawn from those premises.
1. My mom likes
2. My sister likes
3. Therefore, all
Premise: My dog has
Premise: My friends’
dogs have fur.
all dogs have fur.
In inductive arguments, the premises make it likely the conclusion is true, but it is
possible for the conclusion to be false even if the premises are true.
1. All students eat pizza.
Claire is a student at UT.
Therefore, Claire eats pizza.
2. All athletes work out in the gym.
Barry Bonds is an athlete.
Therefore, Barry Bonds works out in the gym.
3. My niece cries.
My niece is a baby.
All babies cry.
4. Dogs like dog bones.
My pet is a dog.
My pet, Simon, likes dog bones.
Directions: On your own sheet of paper, identify the premises and conclusions and
determine whether the arguments are inductive or deductive.
1. All dogs are mammals. Golden retrievers are dogs. Therefore,
golden retrievers are mammals.
2. I saw a white albatross at the zoo. All albatrosses are white.
3. Smoking is bad for your health; therefore, you shouldn’t smoke.
4. My cat does not like to get wet. My neighbor’s cat does not like
to get wet. Cats do not like to get wet.
5. All flowers are plants. A daffodil is a flower. Therefore, a daffodil
is a plant.