CCSS.Math.Content.HSS.IC.A.1

A September 2011 Gallup survey suggests that 38% of Americans are planning on voting for Barack Obama in the 2012 presidential election. Among a random sample of 100 people, approximately how many would you expect to vote for Obama? 

• 38 people
• 42 people
• 6 people
• Cannot be determined

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CCSS.Math.Content.HSS.IC.A.1

If the sample is representative of a high school with 2,000 freshman and seniors, then based on the table, what is the predicted number of freshman at the high school who would select math as their favorite high school subject?

• 520
• 240
• 65
• 30

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CCSS.Math.Content.HSS.IC.A.1

If one of the seniors from the sample is selected at random, which of the following is the closest to the probability the student selected science as his or her favorite high school subject?

• 0.48
• 0.26
• 0.32
• 0.15

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CCSS.Math.Content.HSS.IC.A.1

Determine the type of sampling used in the following scenario: A psychologist uses a computer program to randomly select names from a list of students at a university.  The members of the sample will take a survey about student housing at the university. 

• Convenience
• Self-Selection
• Systematic
• Random

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CCSS.Math.Content.HSS.IC.A.1

What is the point estimator for the interval (-5 , 13)?

• 10

• 9.5

• 9

• -5

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CCSS.Math.Content.HSS.IC.A.1

Simple random sample and systematic random sample are two types of ...

• biased samples

• unbiased samples

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CCSS.Math.Content.HSS.IC.A.1

For a sample, the 95% confidence interval is (0.202, 0.482).

What is the point estimate, p̂, of this sample?

• 0.28

• 0.14

• 0.342

• 0.684

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CCSS.Math.Content.HSS.IC.A.1

Determine whether you would survey the population or a sample:

You want to know the average height of seventh-graders in Tallahassee.

• Survey the population

• Survey a sample

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CCSS.Math.Content.HSS.IC.A.1

Descriptive statistics involves...

• collection, presentation, and description of sample data

• the technique of interpreting the values resulting from the descriptive techniques and making decisions and drawing conclusions about the population

• attempting to provide incorrect information and provide misleading graphs

• using information, numbers, and graphics even when data can't be collected

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CCSS.Math.Content.HSS.IC.A.1

Mrs. Horn samples her class by selecting every third person on her class list. Which type of sampling method is this?

• Simple

• Systematic

• Stratified

• Cluster

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CCSS.Math.Content.HSS.IC.A.1