deductive reasoning inductive reasoning deductive reasoning

Inductive reasoning uses patterns and trends to draw
conclusions.
Deductive reasoning uses logic, facts, and scientific
evidence to draw conclusions.
Is the following conclusion a result of inductive or
deductive reasoning?
1) There is a myth that the Great Wall of China is the only
man-made object visible from the Moon. The Great Wall is
barely visible in photographs taken from 180 miles above
Earth. The Moon is about 237,000 miles from Earth.
Therefore, the myth cannot be true.
deductive reasoning
Are the following conclusions a result of inductive or
deductive reasoning?
2) For the past three months, Riverside Elementary has
served pizza for lunch on Wednesday. Therefore, this
coming Wednesday will be another pizza day.
inductive reasoning
3) There is a myth that an eelskin wallet will demagnetize
credit cards because the skin of the electric eels used to
make the wallet holds an electric charge. However, eelskin
products are not made from electric eels. Therefore, the
myth cannot be true.
deductive reasoning
4) State the conclusion that can be reached after reading
the first two statements. If a logical conclusion does not
follow, write “no conclusion”.
-All freshmen at Ohio State need to attend an orientation
meeting.
-Janet attended an orientation meeting.
NO CONCLUSION

5) State the conclusion that can be reached after reading
the first two statements. If a logical conclusion does not
follow, write “no conclusion”.
6) State the conclusion that can be reached after reading
the first two statements. If a logical conclusion does not
follow, write “no conclusion”.
-If you break an item in a store, you must pay for it.
-Ellen broke a clay pot at Hoyt Garden Center.
-Ellen must pay for the clay pot.
(Law of Detachment)
-If Mr Wilson is elected mayor, city services will be cut.
-If city services are cut, Fred will lose his job.
-If Mr. Wilson is elected mayor, Fred will lose his job.
(Law of Syllogism)
7) State the conclusion that can be reached after reading
the first two statements. If a logical conclusion does not
follow, write “no conclusion”.
8) State the conclusion that can be reached after reading
the first two statements. If a logical conclusion does not
follow, write “no conclusion”.
-If you need more energy, drink a Vita-Plus Shake.
-A “B” is a good grade in Mr. Moyer‛s history class.
-Colin drinks Vita-Plus Shakes.
-Heather got a good grade in Mr. Moyer‛s history class.
NO CONCLUSION
NO CONCLUSION

9) State the conclusion that can be reached after reading
the first two statements. If a logical conclusion does not
follow, write “no conclusion”.
10) State the conclusion that can be reached after reading
the first two statements. If a logical conclusion does not
follow, write “no conclusion”.
-If it snows tonight, Jay will have to shovel his driveway.
-If Brecksville beats North Royalton, then we will get the
Golden Shoe.
-If Jay shovels his driveway, he will hurt his back.
-If it snows tonight, Jay will hurt his back.
(Law of Syllogism)
-North Royalton was beaten by BBHHS, 31-26.
-Brecksville will get the Golden Shoe.
(Law of Detachment)
HW: p 91-2 (1-18)