Biased vs unbiased

1.  Carlos wants to know the favorite sport of people at his school so he asks his baseball team. What type of sample would this be?

• Biased
• Unbiased

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

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

• Median

• Population

• Random Sample

• Quartile

Tags

CCSS.HSS.IC.B.3

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

Tags

CCSS.RI.8.1

CCSS.RI.8.8

CCSS.RL.11-12.1

CCSS.RL.8.1

CCSS.RL.9-10.1

To determine how many students plan to attend the school musical, Maria surveys 100 random people in the hallway.

• Biased

• Unbiased

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

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

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

To get valid results, a sample must be...

• biased

• unbiased

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

You want to know your town’s favorite fast-food restaurant. You randomly ask 30 people their preference as they leave a McDonald’s restaurant.

• biased

• unbiased

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

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

• Biased
• Unbiased

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Claire wants to know if the people in her neighborhood think that the speed limit on their street should be reduced. She asks the parents of the children she babysits.

• Biased

• Unbaised

Tags

CCSS.RL.5.6

A boss wants to know if his employees would be interested in a company picnic. He prints an alphabetical list of all the employee names and asks every 10th person on the list.

• Biased

• Unbiased

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1