Analyzing Surveys and Data

To determine how often people eat out, every tenth person entering a Chinese restaurant is surveyed.

• Biased Sample

• Unbiased Sample

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

• Biased

• Unbiased

To see who has a computer at home the front office chooses 10 students randomly per grade to ask.

• Biased

• Unbiased

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

• biased

• unbiased

Karen surveyed the first seven shoppers at the produce stand.  Is this sample of shoppers at the produce stand likely to be biased?

• yes
• no

Allie wants to learn the most popular board game in the United States, so she creates a poll and shares it on Twitter. Random or Biased/

• Random

• Biased

Jacob wants to determine the favorite candy among all 7th graders. He asks all the people who sit in his row in Math class. Random or Biased?

• Random

• Biased

Which scenario would produce the least biased results?

• asking athletes at a gym what their favorite television show is
• asking shoppers at a store where their favorite place to shop is
• asking fans at a baseball game who their favorite baseball team is
• asking students in a college library what their favorite college sports team is

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

• Sample
• Population
• Random Sample
• Quartile

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