TEKS.MATH.7.6F

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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TEKS.MATH.7.6F

Henry surveyed the first 7 celebrities to arrive at the movie premiere.  Is this sample of celebrities likely to be biased?

• yes
• no

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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 toy store owner is tracking how much kids spend each month on toys.  Which choice BEST represents a sample?

• All of the kids who buy toys.
• 275 rich kids
• 200 kids from ages 10 to 15
• 292 boys ages 7-15

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TEKS.MATH.7.6F

Assign each car in a dealership a number and then use a random-number table to select the cars to be inspected. 

• systematic
• random sample
• convenience
• biased sampling

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TEKS.MATH.7.6F

What is the sample and population?
Number of McDonald's in a 25 miles² area of Maui...

• Population:  Number of McDonald's
  Sample:  25 miles² of Maui
• Population: 25 miles² of Maui
  Sample:  Number of McDonald's
• Population:  25 miles²
  Sample:  Maui
• Population:  Maui
  Sample:  Number of McDonald's

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TEKS.MATH.7.6F

Why do we randomly select our samples?

• to increase bias
• to reduce bias
• so we don't get the same answers from everyone
• because it's easier

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TEKS.MATH.7.6F

A safety inspector conducts air quality tests on a randomly selected group of 7 classrooms at an elementary school.

• The population is all classrooms in the district; the sample is the 7 classrooms selected.
• The population is all classrooms in the elementary school; the sample is the 7 classrooms selected.
• The population is all elementary students in the school; the sample is the students in the 7 classrooms selected.

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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

I drew 10 names from a hat containing the names of every student that I teach, what type of sample have I taken?

• A random sample.

• A biased sample.

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TEKS.MATH.7.6F