11-1 Quizizz

1. A sample in which every person, object, or event has an equal chance of being selected.

• A. Random sample.
• B. Biased sample.

2. When a sample does not accurately represent the population it is a:

• A. Unbiased sample
• B. Biased sample

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

• A. Biased
• B. Unbiased

4.  Carlos wants to know the favorite sport of people at his school so he asks his baseball team.

• A. Biased
• B. Unbiased

5.  A hospital wants to open a gym. They ask the night-shift ER staff when they would use the gym.

• Biased
• Unbiased

6. 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?

• A. Thirty randomly selected students from her school
• B. Thirty students who are rarely tardy
• thirty of her friends

9. Mrs. Croix is conducting a survey to find out the favorite snack of fifth and sixth graders. She will ask a sample of 100 students. Which of the groups below should be surveyed to get the BEST representative sample?

• A. 20 students from each of the 5 local fifth- and sixth-grade schools.
• B. The first 100 students who go to a local baseball game

Before a nation wide election, a polling place was trying to see who would win.
Which choice best represents a sample?

• A selection of voters over age 50.
• A selection of male voters.
• A selection of voters of different ages.
• All of these.

What would be the population in this example?
Surveyors in a mall choose shoppers to ask about products they prefer.

• the surveyors
• all shoppers in the mall
• the shoppers who were asked their preferences