Population Sample Biased Unbiased

You want to estimate the number of students in a high school who ride the school bus. Which sample is best?

• 4 students in the hallway

• All students in the marching band

• 50 seniors at random

• 100 students at random during lunch

Are the residents of Florida the sample or the population?

• sample

• population

Are all quarters in circulation the sample or the population?

• Sample

• Population

Which one is the population?

• 5 ants

• Colony of ants

Which one is the sample?

• All books in library

• 10 library books

Which one is the sample?

• Passengers on a train

• Passengers in the first train car

To determine their favorite country artist, a radio station randomly surveyed 100 people at a Luke Bryan concert. Determine whether this sample is biased or unbiased.

• Biased

• Unbiased

To determine how much money college students spend on clothes each semester,a researcher surveys 450 college students as they leave the university library. Is this sample biased or unbiased?

• Biased because not everyone goes to the library

• Unbiased because 450 people is enough people to provide accurate data

• Biased because 450 is not enough people to provide accurate data

• Unbiased because everyone goes to the library

Which one is the population?

• DVDs in a video store

• DVDs in the comedy section

Choose the best sample.

• Sample A

• Sample B