Biased or UnBiased

• 7 Students in the hallway

• All students in the band

• 50 8th graders at random

• 100 students during the lunch periods.

• The sample is biased because it contains only people at the state park.

• The sample is biased because it contains only people who are environmentally conscious.

• The sample is biased because it contains only people who are outdoor minded.

• The sample is unbiased.

• The sample is unbiased

• The sample is biased because she is surveying only people at the mall.

• The sample is biased because she doesn't know if the people even watch television.

• The sample is biased because she is interested in only their favorite show.

• The sample is unbiased.

• The sample is biased because he asks only people who own cars.

• The sample is biased because he asking people as they enter the dealership.

• The sample is biased because he is asking people at only one car dealership.

• the students on her bus

• her homeroom class

• students waiting in the carpool area

• members of the cycling club

• The sample is biased because only smart students were surveyed.

• The sample is biased because only students at the library were surveyed.

• The sample is biased because only book loving students were surveyed.

• The sample is unbiased.

Tags

CCSS.RL.11-12.6

• Survey the 15 girls in his class

• Survey 60 sixth-grade students

• Survey his 3 best friends

• Survey the 13 boys in his math class

• selecting 10 students from each homeroom

• selecting members of the girls' softball team.

• selecting members of the boy's basketball team

• selecting student who like her favorite flavor of ice cream.

A sample is...

• The group of people you survey to collect data

• The entire group of people you want to learn about

• Free food

A biased sample...

• Is valid

• Favors one or more parts of the population over others

• Accurately represents the entire population