Population and Sample

_______ 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 surveys mathematics teachers to get their opinion on teaching.  What is the sample?

• All teachers in the world.

• All teachers within the school.

• All mathematics  teachers in the school.

• All teachers except mathematics teachers.

There are 45 people working in a particular building. A survey on dietary habits is conducted by giving every third person in the building a questionnaire to fill out. From the questionnaire, the researcher obtains a score on the dietary habits of the 15 people.What is the number of members in the population?

Mathematical Equivalence

ON

Identify the population and sample for each example.

• Population: Students

  Sample: Members of the football team

• Population: Members of the football team

  Sample: Students

• Population: Students

  Sample: Students that have had a broken bone

• Population: Members of the football team

  Sample: Members of the football team that have broken a bone.

Identify the Sample: The Huddle House wants to know if their customers buy dessert when they eat out. As people leave the restaurant one evening, 20 people are surveyed at random. Eight people say they usually order dessert when they eat out. The manager at Huddle House concluded that most customers do not order dessert. What is the SAMPLE in this scenario?

• 20 customers from Huddle House

• All customers from Huddle House that evening

• 8 customers from Huddle House

• The employees from Huddle House

A survey company was trying to see if people in a state thought the pollution was too high. Which choice best represents a population?

• Every person in the state

• A selection of people from each neighborhood in the state

• A selection of people who live near the highways

• A selection of people who live in small towns

The entire group studied.

• sample

• population

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

• The coach

• The ticket stubs

• The eight people to march in the sportsmanship parade

• The baseball game spectators

The owners of a waterpark are taking a survey to determine how many trips to the park kids in the area take during the summer. They take a survey of kids entering the park on a Monday. Is this a good sampling method?

• No, they should have surveyed kids at the local high school.

• No, many area kids may not come to the water park, they need a random sample of area kids.

• Yes, because those kids who come on Monday more than likely come on other days, too

• No, they should have surveyed kids on Friday and Saturday when more people come to the park.