2 Survey Types and Biased & Unbiased Surveys.notebook
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March 20, 2019
You need out your Agenda & warm UpHomework: Biased/UnbiasedWarm Up:
1. We want to do a survey on Cobb Counties Families to see who has a pet at home. We decide to ask 20 families from each Middle School.
Pop: Sample:
2. You want to know what shoppers favorite store is at the mall so you interview 20 people walking out of American Eagle.
Pop: Sample:
3. 9x 12 = 21
2 Survey Types and Biased & Unbiased Surveys.notebook
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March 20, 2019
-everyone in the population has a fair chance.
-EX: randomly selecting names from a list or hat
(like the sticks in class)
-People are selected according to a specfic time interval.
EX: every 10th person to enter the cafeteria
2 Survey Types and Biased & Unbiased Surveys.notebook
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March 20, 2019
-"Lazy method"
-Members of a
population are easily
selected. (Something
convenient)
EX: Mrs. Sangster only
asking her homeroom a
question.
-People volunteer to respond to a survey.
-Only people who want to participate complete it.
EX: a survey on Mrs. Sangster's blog for students to answer if they choose.
2 Survey Types and Biased & Unbiased Surveys.notebook
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March 20, 2019
4 Corners
2 Survey Types and Biased & Unbiased Surveys.notebook
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March 20, 2019
Taylor Swift wants to know how many of her fans like her new CD. She puts a survey with her CD and calculates results from people who mail it back.
2 Survey Types and Biased & Unbiased Surveys.notebook
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March 20, 2019
We want to know how many teachers at McCleskey have a dog. We put their name in a hat and draw 8 names.
2 Survey Types and Biased & Unbiased Surveys.notebook
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March 20, 2019
You want to know students at McCleskeys favorite basketball team. You ask your 1st period math class.
2 Survey Types and Biased & Unbiased Surveys.notebook
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March 20, 2019
You want to know every one at MMS favorite social media. You put a survey in the cafeteria & let students fill it out if they want.
2 Survey Types and Biased & Unbiased Surveys.notebook
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March 20, 2019
one or more groups in the population are being favored.
select people to represent an entire population
2 Survey Types and Biased & Unbiased Surveys.notebook
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March 20, 2019
survey method unbiased surveyentire
biased survey
2 Survey Types and Biased & Unbiased Surveys.notebook
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March 20, 2019
did everyone in the population have a fair chance to share their opinion?
it cannot be voluntary
was the sample size big enough?
number of people surveyed
2 Survey Types and Biased & Unbiased Surveys.notebook
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March 20, 2019
2 Survey Types and Biased & Unbiased Surveys.notebook
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March 20, 2019
2 Survey Types and Biased & Unbiased Surveys.notebook
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March 20, 2019
2 Survey Types and Biased & Unbiased Surveys.notebook
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March 20, 2019
2 Survey Types and Biased & Unbiased Surveys.notebook
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March 20, 2019
Sit silently for the news
2 Survey Types and Biased & Unbiased Surveys.notebook
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March 20, 2019
1) Colonialism in Africa reading & questions
2) Color/label map based on which European countries colonized African countries
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