Population vs Sample/Biased vs Unbiased

A mayor wanted to see if the people in his town thought that he was doing a good job. (Identify the population)

A mayor wanted to see if the people in his town thought that he was doing a good job. (Identify a valid sample)

A musician wanted to see what people who downloaded his last album thought about the songs. (Identify the population)

A musician wanted to see what people who downloaded his last album thought about the songs. (Identify a valid sample)

A gaming website wanted to find out which console its visitors owned.

(Identify the population)

A gaming website wanted to find out which console its visitors owned.

(Identify a valid sample)

Determine whether each sample is biased or unbiased.

Casey surveyed the members of his soccer team to ask them what their favorite sport is.

Determine whether each sample is biased or unbiased.

An airline is conducting a survey to determine whether people prefer to check their luggage or carry it on. They ask every 10th person that walks into an airport.

Determine whether each sample is biased or unbiased.

Imani would like to approximate the number of students in her school with part-time jobs. She surveys the 28 students in her math class.

Determine whether each sample is biased or unbiased.

A school district would like to know what type of communication (email, text, or phone) parents prefer. They survey the parents of the 7th grade students enrolled in the district.