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AP Stat Day 178 Days until AP Exam
Course ExpectationsIntroduction to Statistics
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Course ExpectationsP
aper
wor
kP
aper
wor
k You must turn in:•AP agreement
•Calculator letter
•Batteries
•Syllabus Signature Page
No later than:
Tuesday 8/31/11
The
AP
Exa
mT
he A
P E
xam The AP Exam is
May 15, 2012.
-If you are on free or reduced lunch, it will cost $9. If not it will cost $60. Start saving now.-Taking the AP Exam is the only way to receive college credit for this class
Hom
ewor
k an
d T
ests
Hom
ewor
k an
d T
ests Homework will be
assigned daily, even on test days. It will be collected the following class day. Tutorials are available Monday and Tuesday before school and during 8th period. You will receive a calendar with all assignments and test dates.
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Supplies
• One 3-subject notebook per quarter (must be at least 120 pages)
• Highlighter• Glue stick• Scissors• Pen/pencil• Textbook• These must be brought to class EVERYDAY.
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Class website:
• www.wix.com/ckmath/Statistics
• What you can find there:– 3-week calendar– PowerPoints and/or lecture notes– Journal requirements– Fun Statistics links
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Your first statistics question!
Is 99 a good number for you?
If so, STAND UP!
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Age?
In Cents?
Daily Salary?
Monthly Salary?Grade in AP Stat?
Golf Score?
Bowling Score?
Is 99 a good number for you if it is your…
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So… A number isn’t enough!
• We need to know what they mean!
• This is the class that will connect numbers to their meaning!
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Statistics – why it’s different from your other math classes
• Based on inductive rather than deductive reasoning.
• Answers are not made with complete certainty.• Clearly writing an explanation of your answer IN
CONTEXT is required for most problems. Actual short essays on tests……what a treat!
• Common sense is a real asset!• Reading the text is strongly advised.• Fewer homework problems – quality not quantity
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Some Definitions…
• Variable (def.) – any characteristic
of a person or thing that can be expressed as a number or counted.
• Data (def.) – the numbers or
information collected in a study or experiment.
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Types of Data
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Which is Which?
• A rating system of superior, good, average, and poor
• Times in seconds to run a mile• Social security numbers• Student test grades ranging from 1 to 100• Heights of people recorded in inches• Zip codes• Percentages of students in each class who
master a particular skill
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Example 1:
Study of different ethnic groups in a Chicago
retirement community.
1=White 2=African American 3=Asian 4=Other
Total = 60
Mean = 1.98
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Example 2:
Tickets issued in Williamson county
• 15,000 35 years old and over
• 10,000 under 35 years old
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Shocking Statistics pt 1
Half the kids in the U.S. are below the
national average!
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Shocking Statistics pt 2
Annual deaths by drugs
• Tobacco 400,000
• Alcohol 90,000
• Cocaine 8,000
• Heroin 6,000
• From A Mathematician Reads the Newspaper by John Paulos – pg 134
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Statistical Reasoning
Which is more frightening?
a) 1 out of 100,000 citizens in the U.S. have been diagnosed with the bird flu
b) 3000 cases of the bird flu have been diagnosed in the U.S.
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Whoa, what?“They’ve taken a poll this weekend and come to the
conclusion that 51% of Americans are in the
majority.”
• From Saturday Night Live – Weekend Update
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Alien Invasion!
$100 million worth of damage is done to the U.S. economy
as a result of alien plants and animals, according to Bob
Goodlatte, a House agriculture subcommittee
chairman.
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Questions to ask
about data
What variable is being used?
What are the units
of measure?
How are the data recorded?
What was usedto make the
measurement?
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Homework:
1) Complete the cover page of your journal. Things to include:
AP Exam Date, Class Website, 4 main ideas of the class.
2) Answer the prep questions on the following slide on p. 2 of your journal
3) Get your 3 papers signed and bring them back, along with 4 AAA batteries.
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Prep Questions:
• What is a population?• What is a census?• Have you ever participated in a survey? If so,
how were you approached to participate?• What does it mean to be biased?• Do you answer calls from unknown numbers?• If I asked you to administer a survey on Friday,
how would you find participants? Would your method be fair?