AP Stat Day 1 78 Days until AP Exam Course Expectations Introduction to Statistics

Course Expectations Paperwork You must turn in: AP agreement Calculator letter Batteries Syllabus Signature Page No later than: Tuesday 8/31/11 The AP Exam The AP Exam is May 15, 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 Homework and Tests 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 8 th period. You will receive a calendar with all assignments and test dates.

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.

Class website: What you can find there: –3-week calendar –PowerPoints and/or lecture notes –Journal requirements –Fun Statistics links

Your first statistics question! Is 99 a good number for you? If so, STAND UP!

Is 99 a good number for you if it is your… Age? In Cents? Daily Salary? Monthly Salary? Grade in AP Stat? Golf Score? Bowling Score?

So… A number isnt enough! We need to know what they mean! This is the class that will connect numbers to their meaning!

Statistics – why its 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

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.

Types of Data CategoricalQuantitative

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

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

Example 2: Tickets issued in Williamson county 15, years old and over 10,000 under 35 years old

Shocking Statistics pt 1 Half the kids in the U.S. are below the national average!

Shocking Statistics pt 2 Annual deaths by drugs Tobacco400,000 Alcohol 90,000 Cocaine 8,000 Heroin 6,000 From A Mathematician Reads the Newspaper by John Paulos – pg 134

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.

Whoa, what? Theyve taken a poll this weekend and come to the conclusion that 51% of Americans are in the majority. From Saturday Night Live – Weekend Update

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.

Questions to ask about data What variable is being used? What was used to make the measurement? What are the units of measure? How are the data recorded?

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.

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?