CCSS.Math.Content.HSS.IC.B.3

Identify the Population:
Members of the Drama Club plan to sell popcorn as a fundraiser for their Shakespeare production. They survey 75 students at random about their favorite flavors of popcorn. 33 students like butter, 15 like cheese, and 27 like caramel.

• 33 Students
• 75 Students
• All Students
• 27 Students

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CCSS.Math.Content.HSS.IC.B.3

Kim surveys 100 moviegoers that entered the movie theater in the first hour.  What type of sampling method is this?

• Random
• Convenience
• Biased

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CCSS.Math.Content.HSS.IC.B.3

The process of gathering information/data from EACH member of the population.

• Census
• Interview
• Survey
• Questionnaire

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CCSS.Math.Content.HSS.IC.B.3

Units of the population are grouped; one or more groups are selected at random.  All units of that group are included in the sample.

• cluster sample
• simple random
• stratified
• proportional

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CCSS.Math.Content.HSS.IC.B.3

Identify the sampling design: Student government randomly samples 25 students of each of the four classes.

• stratified
• volunteer
• systematic
• simple random

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CCSS.Math.Content.HSS.IC.B.3

A report in a medical journal notes that the risk of developing Alzheimer's disease among subjects who regularly opted to take Ibuprofen was about half the risk among those who did not.  Is this good evidence that Ibuprofen is effective in preventing Alzheimer's?

• Yes, because the study was a randomized, comparative experiment
• No, because the effect of Ibuprofen is confounded with the placebo effect
• No, because this is an observational study.  An experiment would be needed to confirm (or not confirm) the observed effect.
• Yes, because a 50% reduction can't hapen just by chance

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CCSS.Math.Content.HSS.IC.B.3

A market research company wishes to find out whether the population of students at a university prefers Starbucks or Dunkin Donuts. A random sample of students is selected, and each student is asked first to try both but the order they try them is randomly decided with a coin toss (heads: Starbucks, then Dunkin. tails: vice versa). They then indicate which brand they prefer. This is an example of

• a completely randomized experiment
• an observational study
• a stratified sample
• a matched pairs experiment

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CCSS.Math.Content.HSS.IC.B.3

Determine the type of sampling used in the following scenario: Farmer Joe randomly picks 100 trees using a random number generator to estimate the number of apples produced by his apple trees.  This is ______________ sampling.

• Simple
• Stratified
• Cluster
• Systematic

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CCSS.Math.Content.HSS.IC.B.3

Researchers want to determine if there is a relationship between whether or not a woman smoked during pregnancy and the birth weight of her baby. Researchers examined records for the past five years at a large hospital.

What type of study is described?

• Survey

• Experimental Study

• Observational Study

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CCSS.Math.Content.HSS.IC.B.3

You want to see if students who have a 4.0 grade point average study more than those who do not.

• survey

• observational study

• experiment

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CCSS.Math.Content.HSS.IC.B.3