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WELCOME TO ADVANCED MATH CLASS

WELCOME TO ADVANCED MATH CLASS. Ms . Stadeker Advanced Math 2013-2014. Advanced Math Monday, September 9 , 2013. Objective (students will be able to): Understand the role of bias in everyday events.

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WELCOME TO ADVANCED MATH CLASS

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  1. WELCOME TO ADVANCED MATH CLASS Ms. Stadeker Advanced Math 2013-2014

  2. Advanced MathMonday, September 9, 2013 Objective (students will be able to): • Understand the role of bias in everyday events. • Accurately describe possible biases that may arise when doing a research project of their choosing. Agenda: Exit Slip Do Now Check-In What is bias? Debrief Homework Advanced Math

  3. Do Now • Respond to this prompt: • “Is the Fenger High School dress code fair?” • Ready, set, go! Advanced Math

  4. What is Bias? • Systematic Error due to a non-random sample of a population • Refers to tendency of a sample statistic to systematically over- or under- estimate a population. • Feelings and opinions not facts • Often occurs when the survey sample does not accurately represent the population.

  5. Where can bias occur? Bias is most likely to occur within a study when the population is underrepresented. (Selection Bias) • Undercoverage - occurs when some members of the population aren’t represented in the sample • Nonresponse bias - individuals chosen for the sample are unwilling or unable to participate in the survey • Voluntary response bias - The resulting sample tends to overrepresent individuals who have strong opinions.

  6. Bias in Surveys 3 Types of Survey Bias • Response bias -Refers to the bias that results from problems in the measurement process. • Leading questions - Questions tend to lead the individual to a certain response. • Social desirability - Most people like to present themselves in a favorable light, so they will be reluctant to admit to illegal activities in a survey, particularly if survey results are not confidential. Instead, their responses may be biased toward what they believe is socially cool.

  7. How do we eliminate bias? Instructions: • You will be put into pairs • Using the the different types of bias, students will write 3-5 ways to eliminate bias when asking questions • Students will write their responses and group members on a notecard • Students should decide who will be the note taker and who will the point person • YOU HAVE 15 MINUTES Advanced Math

  8. Debrief… Instructions: • Students will give their presentation at the front of the class and ask/answer questions • Both team members must speak in this activity • Class should determine why/why not each group’s responses would be effective • Students should decide who will be the note taker and who will the point person • YOU HAVE 1 MINUTE Advanced Math

  9. HOMEWORK • Identify two examples of each type of survey bias discussed in class: • Response Bias • Leading Questions • Social Desirability Advanced Math

  10. HAVE A GREAT DAY!!! Mr. Daniels Advanced Math

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