Statistic: survey Design and Bias

13) Consider each of the following questions. Use the criteria for what to avoid in good questions. Identify any criteria (there may be more than one) which are not met and rewrite the question to improve it. a) On a scale of 1 to 5 (5 being the highest), evaluate the talent level of Sidney Crosby, who was voted by the NHLPA to be the most valuable player in the NHL multiple times. Criteria not met: Rewrite: b) From the list below, indicate which goaltenders you wouldn't choose for your fantasy hockey team. Roberto Luongo Marc-Andre Fleury James Reimer Martin Brodeur Steve Mason Jimmy Howard Jonathan Bernier Carey Price Devan Dubnyk Craig Anderson Criteria not met: Rewrite:12] Identify the type{s] of bias that may result from each of the following data collection methods. a} You wish to nd out how many hours teenagers spend playing video games on an average school night, so you randomly survey ve students from each block A class. b) You wish to determine how many students will come to an upcoming dance and so you send a survey to all Grade 9 classes. c] Teachers of a school want to gather data on how many students cheat during tests so they conduct one on one interviews with each of their students. I!) The cafeteria hand out surveys during lunch to students to gather information about what types of meals students would like to have. They ask that students complete the surveys during lunch and drop them before class. e] You are interested in determining how many hours of television teenagers in your school watch per week, so you post a poll on EDSBY and ask for volunteers to ll it out. 11] Identify what type of bias is being indicated. a} : Refers to anything in the survey design that inuences the responses. This includes wording of questions, and unwillingness of respondent to reveal personal facts. h] : When the chosen sample does not accurately represent the population c] : When one type of respondent is overrepresented because groupings of different sizes are pulled equally instead of proportionately d] : Occurs when an individual chosen for the sample can't be contacted or refuses to participate