Statistical Questions, Sampling Methods, Biased/Unbiased

What type of survey sample is it when the entire population is being equally represented?

• Unbiased sample

• Biased sample

Tags

CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.4

What type of survey sample is it when one portion of the population is favored over another?

• Unbiased sample

• Biased sample

A sample should be

• representative of  only middle school students only
• a very large group
• representative of the population
• representative of people who volunteer

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

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

• Biased
• Unbiased

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

Biased sampling is

• when you choose a population that is more likely to give you the result you want

• when you choose a group that is equally likely to be chosen

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.4

Colton polled 22 people at the town senior center. Is this a random sample of the town residents?

• yes

• no

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

• 7 Students in the hallway

• All students in the band

• 50 8th graders at random

• 100 students during the lunch periods.

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.4

To evaluate the defect rate of its memory chips, an integrated circuit manufacturer tests every 100th chip off the production line.

• Biased Sample

• Unbiased Sample

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

A public library asked every 10th person who entered to name the type of book they were getting.

• Biased

• Unbiased

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

To determine the most popular children’s programs, a television station asks parents to call in and complete a phone survey.

• Biased Sample

• Unbiased Sample

Tags

CCSS.7.SP.A.1