Representative Sample

A (a)   is a part of a group being surveyed.

• sample
• population
• random sample
• quartile

_______ is the entire group of objects or individuals considered for a survey.

• Sample

• Population

• Random Sample

• Quartile

A student wants to know which type of pizza the students at his high school prefer. Which option would give an unbiased, representative sample:

• Asking all the students in the hot lunch line.

• Asking 10 random students from each homeroom.

• Asking every other student who gets off a school bus.

• Asking all the 10th graders.

The governor wanted to see if the people in California thought he was doing a good job. Which choice is the best sample?

• 5,000 unemployed voters

• The governor's family

• The residents of Brentwood

• 5,000 voters

A school surveys all 7th grade boys to determine what to sell in the school store.  This sample is _________.

• Biased
• Unbiased
• Representative
• Peanut butter cups

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?

• thirty students who are often tardy
• thirty students who are rarely tardy
• thirty of her friends
• thirty randomly selected students from her school

The principal at Marina Middle School wants to determine if the 120 students in the seventh grade prefer to visit Catalina Island or Camp Mosaic for their end-of-year trip. Which of the following is a representative sample of the population? Select all that apply.

• 20 sixth-grade students, 20 seventh-grade students, and 20 eighth-grade students

• 10 seventh-grade boys and 10 seventh-grade girls

• 25 seventh-grade students

• 15 seventh-grade boys and 5 teachers

• 25 students from the school

Tricia surveys students in her computer class about time spent on computers by students in her school. Is this a representative sample? Explain.

• No; Only a few students in the school take computer class.

• No; Students in computer class likely use computer more than other students.

• Yes; Students in computer class are representative of the school.

• Yes; Students in computer class are representative of people in the town.

Martin wants to determine the general attitude toward math of the students in his school. Which of the following methods will produce a random sample?

• Survey 6 students from each of Mr. Lewis' math classes.

• Survey all of the students in Martin's 1st period math class.

• Survey every tenth student who enters the cafeteria at lunchtime.

• Survey every fourth student in the list of honors students.

What is a representative sample? A) A sample that accurately represents the population B) A sample that is too small to be useful C) A sample that is randomly selected

• A sample that is chosen based on personal bias

• A sample that only includes people from urban areas

• A

• A sample that is handpicked by the researcher