CCSS.Math.Content.7.SP.A.1

_________ is a sample in which each individual or object in the entire population has na equal chance of being selected.

• Sample
• Population
• Random Sample
• Quartile

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CCSS.Math.Content.7.SP.A.1

A computer manufacturer surveys its customers who purchased laptop computers to ask what software the company should include with its computer.  Identify the population.

• Customers who purchased laptop computers.
• Customers of the store.
• Customers who are interested in software.
• Computer manufacturers

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CCSS.Math.Content.7.SP.A.1

A teacher decides to survey the students in her classes to find out their opinion on the new menu in the cafeteria.  Is this biased or unbiased?

• Biased
• Unbiased

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CCSS.Math.Content.7.SP.A.1

How many people watched more than 25 hours of TV last week?

• 0
• 10
• 38
• 42

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CCSS.Math.Content.7.SP.A.1

Choose the true statement(s) about the census and sample shown.

• The sample could be considered too small.

• The sample is biased because is does not include everyone.

• The sample is representative of the population's sub-groups.

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CCSS.Math.Content.7.SP.A.1

What percent of students have heights between 60 inches and 66 inches?

• 75%
• 50%
• 100%
• 25%

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CCSS.Math.Content.7.SP.A.1

I survey a senior citizen center to gain information about the population of NE Oklahoma. Which of the following best describes my population sample?

• Biased, sample is randomly taken or representative of population.

• Biased, sample is not randomly taken or representative of population.

• Representative, sample is randomly taken & representative of population.

• Representative, sample is not randomly taken or biased in terms the of population.

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CCSS.Math.Content.7.SP.A.1

According to a random telephone survey, 85% of all working adults in the U.S. are satisfied with their current job. If I asked 500 adults, how many do you predict would be satisfied with their current job?

• 85 adults
• 340 adults
• 500 adults
• 425 adults

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CCSS.Math.Content.7.SP.A.1

A large company has offices in cities across the country. The director of the company wants to survey employees about their office furniture. Which groups would be most representative of the opinions of all employees in the company? Choose 2 correct answers.

• employees who are randomly selected by a computer from a list of all company employees

• randomly selected employees in the cafeteria of one of the offices

• employees who have worked for the company for more than 10 years

• 5% of randomly selected employees from each office location

• employees answering phone calls in the company’s customer service department

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CCSS.Math.Content.7.SP.A.1

There are 900 students in your school. You ask 150 randomly chosen students how much time they spend doing homework on a typical day. The results are shown. Predict the number of students in your school who, on a typical day, spend an hour?

(Show your math work. Use #13 as your guide)

• 36

• 54

• 324

• 2500

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CCSS.Math.Content.7.SP.A.1