26How much sleep did you get last night? 0-4 hours5-67-8More than 8 hours10
27Which do you prefer for dating? I can’t yet, I am too youngOlder datesYounger datesBlind dates10
28Are you satisfied with your schedule? This will be my best year yetWhy did I get put into some of the classes?I’m just here because I am required to be hereI’m going to my counselor to change my schedule10
29Inference Follows strict rules Judges if things you found are what you expectDecide if evidence proves
30Statistics?Statistics is a way of reasoning, along with a collection of tools and methods, designed to help us understand the world.Statistics (plural) are particular calculations made from data.Statistics is about how to think clearly about data.
31Let’s Get startedOne of the interesting challenges of Statistics is that, unlike some math and science classes, there can be more than one answer.
322 right answers? People make mistakes sometimes intentionally Some mistakes are unintentionalSome mistakes are on purpose to misleadSometimes the method causes mistakes
33Equation challengeEquations are for expressing a mathematical idea concisely and are not the main point of statistics.In Statistics we think about a problem, find and show results and tell others what you have discovered.
34The W’sWhoWhat (and in what units)WhenWhereWhyHow
35ExerciseThinkIdentify the W’sFind variablesClassifyIdentify units
36OscarsAges of Oscar-winning Best Actors and Actresses by Richard Brown and Gretchen Davis gives the ages of actors and actresses at the time they won Oscars. We might use these data to see whether actors and actresses are likely to win Oscars at about the same age or not.
37Weighing BearsBecause of the difficulty of weighing a bear in the woods, researchers caught and measured 54 bears, recording their weight, neck size, length, and sex. They hoped to find a way to estimate weight from the other, more easily determined quantities.
38Arby’s MenuA listing posted by the Arby’s restaurant chain gives, for each of the sandwiches it sells, the type of meat in the sandwich; the number of calories, and the serving size in ounces. The data might be used to assess the nutritional value of the different sandwiches.
39FlowersIn a study appearing in the journal Science a research team reports that plants in southern England are flowering earlier in the spring. Records of the first flowering dates for 385 species over a period of 47 years indicate that flowering has advanced an average of 15 days per decade, and indication of climate warming according to the authors.
40FitnessAre physically fit people less likely to die of cancer? An article in the May 2002 issue of Medicine and Science in Sports and Exercise reported results of a study that followed 25,892 men aged 30 to 87 for 10 years. The most physically fit men had a 55% lower risk of death from cancer than the least fit group.
41SchoolsThe State Education Department requires local school districts to keep these records on all studies: age, race or ethnicity, days absent, current grade level, standardized test scores in reading and mathematics, and any disabilities or special educational needs the student may have.
42CarsA survey of autos parked in student and staff lots at a large university recorded the make, country of origin, type of vehicle (car, van SUV, etc.), and age.
43Age and PartyThe Gallup Poll conducted a representative telephone survey of 1180 American voters during the first quarter of Among the reported results were the voter’s region (Northeast, South, etc.) age, part affiliation, and whether or not the person had voted in the 1998 midterm Congressional election.
44Air TravelThe Federal Aviation Administration (FAA) monitors airlines for safety and customer service. For each flight the carrier must report the type of aircraft, number of passengers, whether or not the flights departed and arrived on schedule, and any mechanical problems.
45Materials needed for class TI 83 or TI84NotebookHighlightersGood attitudeFile Cards
46Assignment In the NewsFind a newspaper or magazine article in which some data are reported. For the data discussed in the article identify the W’s, name the variables, classify each variable as categorical or quantitative and identify the units. Include a copy of the article with your report.
47Graph ExplorationFind five or more different graphs and identify the type you think it is.