TEKS.MATH.7.12B

Elise, a supermarket employee, approached 50 random customers and asked whether they would be willing to discuss what they like most about the store. She interviewed the 22 who said yes. Is this sample of the supermarket's customers likely to be biased?

• yes

• no

Tags

TEKS.MATH.9-12.VI.C

TEKS.MATH.7.6F

TEKS.MATH.7.12B

A teacher wants to know the average time spent doing homework by the students in her class of 20 girls and 5 boys.
She selects the five closest to her desk.

• simple random
• Voluntary Response
• Convenience
• Systematic Random

Tags

TEKS.MATH.9-12.IV.D.1

TEKS.MATH.9-12.VI.A

TEKS.MATH.7.6F

TEKS.MATH.7.12B

You want to know how many students catch the bus to go home.  You go to the bus stop and ask students how they go home from school.  Is this a random sample or biased sample?

• BIASED
• RANDOM

Tags

TEKS.MATH.8.11C

TEKS.MATH.7.6F

TEKS.MATH.7.12B

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. 

Tags

TEKS.MATH.7.12B

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

• 1,000 unemployed voters.

• The mayor's family.

• The residents of the town.

• 242 voters.

Tags

TEKS.MATH.9-12.VI.A

TEKS.MATH.7.6F

TEKS.MATH.7.12B

Parents at a middle school were randomly selected to participate in a survey.  Forty-Two out of 60 parents who were surveyed support a proposal to buy new computers.  There are 456 parents with students at the middle school.  Predict how many of these parents are likely to support the proposal. 

• 42 parents
• 70 parents
• 137 parents 
• 319 parents

Tags

TEKS.MATH.7.6F

TEKS.MATH.7.12B

4. A company makes DVDs and randomly selects 25 from 1500 to test them to see if they work.

• Biased
• Unbiased

Tags

TEKS.MATH.7.6F

TEKS.MATH.7.12B

_______ is a part of a group being surveyed.

• Sample
• Population
• Random Sample
• Quartile

Tags

TEKS.MATH.7.12B

1. For a class assignment, Tyler will conduct a survey to find out what students like to do after school. He asks the first 10 people he sees in the gymnasium before school what they like to do after school. Which statement correctly explains whether Tyler's sample is a random sample?

• Tyler’s sample is not random because he only asks 10 people

• Tyler’s sample is not random because he asks people in a gymnasium.

• Tyler’s sample is random because he asks the first 10 people he sees.

• Tyler’s sample is random because he asks each person the same question

Tags

TEKS.MATH.7.12B

Biased or Random?

Chloe and Danna want to determine the favorite subject of all students in the middle school. So they place every middle school student's name in a bucket and choose 30 to poll.

• Biased sample

• Random sample

Tags

TEKS.MATH.7.6F

TEKS.MATH.7.12B