Transcript Bias - rcschools.net

Bias
Mrs. Stewart
Central Magnet School
Honors Biology
Objectives / Standards:
(You will be able to…)
SPI 3210: Inq 6. - Determine if and
why a conclusion is free of bias
What is bias?
prejudice in favor of or against one
thing, person, or group compared with
another, usually in a way considered
to be unfair
We
tend
to
see
what
we
want
to
see.
Mrs. Stewart’s Cousin
Pick your animal
Is there potential for bias?
At the soccer game
last night, the
referee was paid by
central.
Where is the bias?
An engineer designs a new moulding
for a prosthetic device. He claims this
product is more comfortable and
allows greater mobility of the
prosthetic.
He is also a bilateral (double) leg
amputee and uses the product
himself.
He is attempting to market this
product
Hippos: How could the engineer
create a lack of bias?
Where is the bias?
Oreo receives claims that their
Double Stuf cookies only have 1.8
times the amount of filling.
Oreo has a scientist on staff conduct
experiments to determine the validity
of these results.
The Oreo scientist determines that
the claims are erroneous with no
validity.
Turtles: How could Oreo
investigate the claims without
bias?
Prosthetic, Inc. is one of the top suppliers
of a new prosthetic arm currently on the
market. Orthotics and Prosthetics is their
leading competitor. In their last annual
report, Prosthetic, Inc. claimed that their
profits have increased significantly more
than Orthotics and Prosthetics’ profits. In
the report, they posted the following graphs
showing their profits and Orthotics and
Prosthetics’ profits between the years 1998
to 2009.
Hippos: Find the bias
ABC.com, a website claiming to
present important health care data,
reported that the average blood sugar
level before meals for Americans is
142 mg/dL, indicating that most
Americans are either living with
undiagnosed diabetes or are prediabetic.
Turtles: Find the bias
A local news station reported a study
that found that motorcycles are the
safest vehicles to drive while
passenger cars are the most
dangerous vehicles to drive. They
used the following graph to support
their claim.
Can you?
Determine if and why a conclusion is
free of bias
Exit Ticket:
What should you consider when
viewing a conclusion that includes
graphic or statistical results?