Warm Up

WARM – UP What is Mr. Belin’s Cell Phone Policy? NO CELL PHONES or ear buds During Instruction (unless otherwise allow for lesson) !!!!!!!!!!!

Statistics Vocabulary A QUANTITATIVE VARIABLE takes numerical values for which it make sense to do arithmetic operations like adding and averaging. A CATEGORICAL VARIABLE records which of several groups or category an individual belongs to.

Classify each as Quantitative or Categorical. a.) Time it takes to have pizza delivered. b.) Taste rated on a scale from 1 to 5. c.) Type of pizza (supreme, cheese, etc…) d.) Type of Crust (thin, stuffed, etc…) e.) Age of delivery person. f.) Cost of pizza. g.) Zip Code of delivery area.

Ask 100 randomly chosen people the following 6 QUESTIONS… PROJECT #1 Ask 100 randomly chosen people the following 6 QUESTIONS… #1 A Quantitative question… #2 A Quantitative question directly relate or, associated to your question #1 #3 A Quantitative question NOT related or associated to questions #1 or #2… #4 A Categorical question… #5 A Yes or No question… #6 Gender

AP STATISTICS Chapter 2 - DATA The W’s of Data Collection and Analysis : Who, What, Why, When, Where, and How. WHO: INDIVIDUALS – the objects described by a set of data. Examples: Respondents, Participants, Subjects, Experimental Units, or Observations = xi

WHAT: A VARIABLE is any characteristic of an individual. The DISTRIBUTION of a variable tells us what values the variable takes and how often it takes these values. Ex. Histograms.

WHY: To make an INFERENCE - the process of drawing a conclusion about a population on the basis of sample data.

Where and When: How: Location and Time Period Survey (Sampling) Experiment Observational Study

As an employee of Pizza Hut, your boss has put you in charge of marketing a New kind of Pizza. Using the 6 W’s, how would you precede? Be detailed!!! Who, What, Why, When, Where, and HoW.

Homework: Page 16: 2-10 even

Homework: Page 16: 2-10 even Page 16 # 2: Who – 30 similar companies. What – 401(k) employee participation rates Why – the company in question is concerned that its employee participation rate is lower than the rates of similar companies When – Around1992 Where – United States??? How – Companies were “sampled”, using a survey. -Quantitative

Homework: Page 16: 2-10 even

Homework: Page 16: 2-10 even Page 16 # 4: Who – Winners of Best Actor or Best Actress Oscars.. What – Age (in years) Why – To compare age distributions of actors and actresses When – From the beginning of the Academy Awards to the present????? Where – United States??? How – It appears that this information was collected from a census (Observational Study) -Quantitative

Homework: Page 16: 2-10 even

Homework: Page 16: 2-10 even Page 17 # 12: Who – Students What – Age Race # of Absences Grade Level Reading Score Math Score Disabilities Why – State record keeping requirements When – Not specified Where – Not specified How – Collected by student observation (all students) -Quantitative -Categorical -Quant. -Categ. -Quant. -Quant. -Categorical

Data Tables The following data table clearly shows the context of the data presented: Notice that this data table tells us the What (column) and Who (row) for these data.