Populations and Sampling

Guillermo randomly surveys 15 members of his community service group to gain ideas for the next community service project. What is the population of this study?

• Guillermo's entire community service group

• The 15 members who are surveyed

• The entire state Guillermo lives in

• Guillermo himself

A newspaper wants to identify a city's favorite museum. Which vocabulary term describes visitors at the science museum on Friday night?

• Sample

• Population

• Representative Sample

• Random Sample

Harry collects data from a random sample of seventh-graders. Out of 25 respondents, 10 ride the bus to school. Out of 150 seventh-graders who attend Harry's school, how many would be expected to ride the bus to school?

• 40 seventh-graders

• 50 seventh-graders

• 60 seventh-graders

• 90 seventh-graders

_______ is a part of a group being surveyed.

• Sample

• Population

• Random Sample

• Quartile

Darrien surveys 60 of the actors theater class. He concludes that 8 out of 15 actors have previous acting experience. What is the sample size?

• 60

• 8

• 15

• 53

Every member of the larger group has an equal chance of being chosen.

• secondary sample

• systematic sample

• stratified sample

• random sample

In order to use samples to estimate something from the population, the sample should be _________________ the population.

• exactly the same as

• nothing like

• representative of

• larger than

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

• Sample

• Population

• Random Sample

• Quartile

Why do we randomly select our samples?

• to control every aspect

• reduce bias

• so we don't get the same answers from everyone

• because it is easier to do