quiz show inductive & deductive reasoning
TRANSCRIPT
Quiz Show!Inductive & Deductive Reasoning
Deductive & Inductive Reasoning Tips
• If the conclusion is based on a collection of evidence—even if it’s just one piece of evidence—it’s inductive reasoning.Examples Rule
Deductive & Inductive Reasoning Tips
• If the conclusion applies a general rule or principle to a specific example, it’s deductive reasoning.
Rule Example
Deductive & Inductive Reasoning Tips
• If the conclusion reached draws from previous rules/thoughts/ideas (a priori knowledge), it’s deductive reasoning.
Previous ideas Example
Deductive & Inductive Reasoning Tips
• If the conclusion is conjecture (a guess) based on previous knowledge, it’s deductive reasoning.
Previous knowledge Guess
Deductive & Inductive Reasoning Tips
• Stereotypes are usually based on deductive reasoning.
Brazilians run around with no
clothes on.
Luana is Brazilian, so she must run
around with no clothes on!
Deductive & Inductive Reasoning Tips
• BUT stereotypes can be created based on inductive reasoning.
Mario and Luigi are Italian and
work as plumbers.
All Italians are plumbers!
Deductive & Inductive Reasoning Tips
• Though deductive and inductive reasoning are both types of logic, they are not always true, and they can lead to some silly ideas.Potatoes have eyes.
I have eyes.I am a potato!
Liberals believe that there should be no prayer in
school and that government buildings
should not put up Christmas decorations.
They also believe in evolution and the Big
Bang Theory. Liberals are anti-Christian.
Inductive
Conservatives believe that poor people deserve to be poor because they made bad decisions. They also believe that girls who are raped should have their
babies anyway. They want to cut back on Medicare and
Medicaid, which would hurt the elderly. Conservatives
are coldhearted.
Inductive
Soft drinks are bad for you because
they’re loaded with sugar. Since Dr. Pepper is a soft
drink, it must be bad for you.
Deductive
All men are mortal. The Pope is a man. The Pope is mortal.
Deductive
Did you hear about that drug company
that raised the prices on a drug 5000%? All
those drug companies are
greedy and selfish.
Inductive
In the survey, the majority of people who identified as
conservative did not believe global warming was real, and the majority who identified as
liberal did believe global warming was real. Thus, we
can conclude that conservatives do not believe global warming is real, and
liberals believe it is real.
Inductive
Boys will be boys. Martin is just
being a boy when he makes sexist
remarks.
Deductive
I heard a news report about some Syrians who are terrorists. I
believe we should kick Syrians out of the
country because they might be terrorists.
Inductive
If some people from Norway are Viking
marauders, then all people from Norway
must be Viking marauders. Break out
the trebuchet!
Inductive
Australians are laid back hippies. If that
guy you met online is from Australia, I’ll bet you $100 he hangs out on the beach all day and smokes pot.
Deductive
Terrible things happen in the world—earthquakes,
tsunamis, mass murders, starvation. Obviously God does
not exist.
Inductive
Miracles happen all the time. People
recover from terminal illnesses and survive accidents that should kill them. Obviously
God is real.
Inductive
The Bible says giants once walked the
earth, so giants once walked the earth.
Deductive
Geniuses are forgetful and do weird things normal people don’t do. I can’t remember where I parked my
car, and I wear cowboy boots to the
beach. I am a genius!
Deductive
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