Stats: Sample, Population, Sampling Methods

_______ is a smaller part of a larger group being surveyed.

• Sample
• Population
• Quartile

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

• Sample
• Population
• Random Sample
• Quartile

A band wants to know the opinion of everyone that bought their latest album on iTunes. There were over 10,000 people across the country that bought the album. Which choice best represents a sample?

• Every person who bought the album.

• A selection of people who didn't want to buy the album.

• 250 people who considered buying the album.

• A selection of 300 people who bought the album.

According to a random telephone survey of 200 adults in the U.S., 75% of all working adults in the U.S. are satisfied with their current job. What is the population in this survey?

• a small group of adults

• all adults in the U.S.

• 75% of adults

• 150 adults

A music store (which offers multiple music clubs) gives "feedback cards" to all members of its Jazz Club to determine the satisfaction of all club members with the resources at the store. What is the sample?

• People who play instruments.

• All music store customers except Jazz Club members.

• All music store customers

• Jazz Club members

A beverage company wanted to see if people in the United States liked their new logo. Which choice best represents a population?

• A selection of logo artists.

• Every person in the United States.

• A selection of shoppers from different states.

• 3,800 children age 5 - 15

The manager of a book store would like the opinion of the store's customers. A survey is given to people who buy mystery novels to see if the store should expand its hours.  What is the population?

• People who visit the bookstore.

• People who buy mystery novels.

• All the residents of the town.

• People who like to read.

Researchers want to examine the grades of students in colleges across the United States. They randomly selected three states and then asked all colleges in that state willing to release grade information from those states.

• Cluster

• Simple Random

• Stratified

• Systematic

Researchers want to examine the grades of students in colleges across the United States. Schools are grouped by two-year state schools, four-year state schools, two-year private schools, and four-year private schools. The researcher then decided to choose five schools from each of those groups.

• Cluster

• Stratified

• Simple Random

• Convenience

A sample was taken from a local high school that consisted of every 15th student picked from a total enrollment of 1,500 students.

• Stratefied

• Simple Random

• Systematic

• Cluster