Populations and Samples

An entire group of objects - people, animals, plants - from which data can be collected.

• population

• sample

• representative sample

• random sample

A subset of the population that you actually gather data from.

• population

• sample

• representative sample

• random sample

A portion of the population that has the same characteristics as the population.

• population

• sample

• representative sample

• random sample

Every member of the population has an equal chance of being selected to collect data from.

• population

• sample

• representative sample

• random sample

A health club manager wants to determine whether the members would prefer a new sauna or a new steam room. The club surveys 50 of its 600 members. What is the population of this study?

• All 600 members of the club

• 50 members the club surveys

A health club manager wants to determine whether the members would prefer a new sauna or a new steam room. The club surveys 50 of its 600 members. What is the sample of this study?

• All 600 members of the club

• 50 members the club surveys

A journalism teacher wants to determine whether his students would prefer to attend a national writing convention or tour of a local newspaper press. The journalism teacher has a total of 120 students in 4 different classes. What would be a representative sample of this population?

• Survey all the kids in a single class

• Randomly choose 40 kids to survey.

• Ask all of the girls to complete the survey.

• Survey all the kids in two of the classes.

Garret wants to find out which restaurant people think serves the best beef brisket in town. What is the population from which Garret should find a sample?

• The residents of the town.

• All of the students who attend school.

• The residents who each the first restaurants.

• All adults in the town.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

A bagel shop takes a survey to find the approximate percentage of its customers who prefer the new shop hours. What is the population of this survey?

• The employees who work at the store.

• Every customer who came to the store on Monday.

• The ten customers who complete the survey.

• All of the bagel shop's customers.

During a middle school baseball game, every spectator placed his or her ticket stub into one of several containers. After the game, the coach chose eight people to march in the sportsmanship parade. What is the sample in this situation?

• Every spectator who attended the game.

• The eight people chosen to march in the parade.

• Every spectator who held on to their ticket stub.

• The baseball players of the team who won the game.