Template by Bill Arcuri, WCSD Click Once to Begin JEOPARDY! Data Management Style!

Template by Bill Arcuri, WCSD JEOPARDY! Define Me!Data Types Name that Technique What Bias?

Template by Bill Arcuri, WCSD FINAL JEOPARDY Reducing Bias

Template by Bill Arcuri, WCSD A highway engineer suggests that an economical way to survey traffic speeds on an expressway would be to have the police officers that patrol the highway record the speed of the traffic around them every half hour. 1. Identify and describe the type of bias. 2. What would be a possible solution to avoid this bias?

Template by Bill Arcuri, WCSD 1. Household Bias – Police cars present will affect how people drive and thus will underrepresent the population of traffic speed. 2. Systematic Random Sample using speed cameras, or unmarked cars throughout the day.

Template by Bill Arcuri, WCSD Daily Double Graphic and Sound Effect! DO NOT DELETE THIS SLIDE! Deleting it may cause the game links to work improperly. This slide is hidden during the game, and WILL not appear. In slide view mode, copy the above (red) graphic (click once to select; right click the border and choose “copy”). Locate the answer slide which you want to be the daily double Right-click and choose “paste”. If necessary, reposition the graphic so that it does not cover the answer text. Daily Double!!!

Template by Bill Arcuri, WCSD Population a group of individuals that is the focus of a study

Template by Bill Arcuri, WCSD Sample a selection of individuals taken from a population

Template by Bill Arcuri, WCSD Longitudinal Study a study that considers individuals over a long period of time

Template by Bill Arcuri, WCSD Cross-sectional Study a study that considers individuals from different groups at the same time

Template by Bill Arcuri, WCSD Inference a conclusion about the population that is made from the sample

Template by Bill Arcuri, WCSD Telephone Number Qualitative or Quantitative variable? Qualitative

Template by Bill Arcuri, WCSD Temperature Qualitative or Quantitative variable? Quantitative

Template by Bill Arcuri, WCSD The amount of time it takes for a light bulb to burn out. Discrete or continuous? Continuous

Template by Bill Arcuri, WCSD The number of times it takes a person to pass their MCATs. Discrete or continuous data? Discrete

Template by Bill Arcuri, WCSD The production of tomatoes by weight. Discrete or continuous data? Continuous

Template by Bill Arcuri, WCSD From the Customer Sales Event, Toyota randomly draws 5 ballots from a jar of contestants to win the new 2013 Camry. Simple Random Sampling

Template by Bill Arcuri, WCSD You want to know which breakfast items students prefer at St. Benedict for an upcoming event. You decide to sample 10% of students from each grade. Stratified Random Sampling

Template by Bill Arcuri, WCSD Mr. Borba is worried his students found the test too difficult. He wants to know how his students felt about the test, so he organizes the students’ names in alphabetical order and chooses every 3rd name to answer a questionnaire. Systematic Random Sampling

Template by Bill Arcuri, WCSD Miss Harbison needs a new cell phone but doesn’t know which brand to choose. Her contacts are organized on her phone by last name and she chooses to ask all her friends with last names beginning with D, F, M, P, T, and V. Cluster Random Sampling

Template by Bill Arcuri, WCSD Bart Simpson manufactures firecrackers and wants to test some of them. Out of the 1000 firecrackers produced, he chooses 50 firecrackers to test and records if they work. Destructive Random Sampling Daily Double!!!

Template by Bill Arcuri, WCSD University of Waterloo sends out surveys to their students via . Most students delete these s before even opening it. Non-response Bias

Template by Bill Arcuri, WCSD As part of a survey of the “Greatest Hits of 2012”, a radio station asks its listeners: Which was the best song by Adele? A. Set Fire to the Rain B. Rolling in the Deep C. Someone Like You D. Other: Response Bias

Template by Bill Arcuri, WCSD A survey asks students at a high school football game whether a fund for extracurricular activities should be used to buy new equipment for the football team or instruments for the school band. Sampling Bias

Template by Bill Arcuri, WCSD The government of Ontario is conducting a study to find out how many families regularly recycle. They decide to collect data from 500 families in each city. Household Bias

Template by Bill Arcuri, WCSD An aid agency in a Kenya wants to know what proportion of households has at least one personal computer. They conduct a survey by calling households randomly selected from the telephone directory. Sampling Bias

Template by Bill Arcuri, WCSD Answer 5-100

Template by Bill Arcuri, WCSD Answer 5-200

Template by Bill Arcuri, WCSD Answer 5-300

Template by Bill Arcuri, WCSD Answer 5-400

Template by Bill Arcuri, WCSD Answer 5-500

Template by Bill Arcuri, WCSD Answer 6-100

Template by Bill Arcuri, WCSD Answer 6-200

Template by Bill Arcuri, WCSD Answer 6-300

Template by Bill Arcuri, WCSD Answer 6-400

Template by Bill Arcuri, WCSD Answer 6-500