TEKS.MATH.7.6F

Ana wants to know the average student’s opinion of the tardy policy at her school. Which group of students should she survey in order to achieve the most accurate results?

• thirty students who are often tardy
• thirty students who are rarely tardy
• thirty of her friends
• thirty randomly selected students from her school

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TEKS.MATH.7.6F

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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TEKS.MATH.7.6F

Tom surveys 40 moviegoers by randomly choosing their names.  What type of sampling method is this?

• Random
• Convenience
• Biased

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TEKS.MATH.7.6F

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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TEKS.MATH.7.6F

The TV station wants to get the opinion of viewers on the look of a new game-show set.  The station's staff calls random people in the phone book.  Is this biased or unbiased?

• Biased
• Unbiased

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TEKS.MATH.6.13B

TEKS.MATH.7.6F

A mayor wanted to see if the people in his town thought he was doing a good job.  Which choice BEST represents a population?

• The residents of 4 different neighborhoods.
• The residents of the town.
• 442 voters age 21 to 30
• Local business owners

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TEKS.MATH.7.6F

A local news station is conducting a survey to determine the favorite summer movies of teens in the city.  How would the survey most likely get a random sample that is representative of the population?

• by asking every 5th person at a local movie theater to name his/her favorite movie
• by asking random teens from local schools to name their favorite movie
• by asking all the teens attending a current movie to name their favorite movie
• by calling teens from around the country

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TEKS.MATH.7.6F

A travel club has 3,000 members.  A random sample of 50 of the club members found that 12 people like mountain vacations best.  Which statement is NOT supported by the sample data? 

• Twenty-four percent of those sampled say they like mountain vacations best.  
• An estimated 720 club members would likely say they enjoy mountain vacations best. 
• Almost one-quarter of club members would likely say they enjoy mountain vacations best. 
• More than 2,500 club members would likely say they prefer other vacations over mountain vacations. 

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TEKS.MATH.7.6F

Biased or Random?

Audi wants to find out how students get to school at Menifee Elementary so she places the names of all students into a fish bowl and pulls out 50 so she can survey them.

• Biased

• Random

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TEKS.MATH.7.6F

Biased or Random?

Reign wants to determine the most popular brand of cereal in all of Kentucky. So he polls all the houses on his street to get a sample.

• Biased

• Random

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TEKS.MATH.7.6F