Random Sampling and Population

Darrien surveys 60 of the actors theater class. He concludes that 8 out of 15 actors have previous acting experience. How many actors would you expect to have experience out of 30?

• 8 actors

• 16%

• 8%

• 16 actors

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

• population

• data

• representative sample

• random sample

In a sample of voters in Harrisburg, 18 out of 25 favored creating a new shopping center. If 50,000 people vote in the next Harrisburg election, how many are likely to vote in favor of the new shopping center based on this sample?

• 40,000

• 14,000

• 36,000

• 28,000

Suppose 7/10 of people surveyed agree that dogs are the best pets to own. How many people out of 500 would you expect to say they DO NOT think dogs are the best pet?

• 350

• 200

• 250

• 150

Select all the options that would produce a random sample.

• Survey the first 50 people that walk in the doors.

• Survey everyone at his jazz band practice.

• Survey two randomly chosen students in every homeroom.

• Assign each student in the school a number, randomly choose 50 numbers, and survey those students.

• Survey every third student that he sees on his walk to school.

Mr. Jackson wants to know his advisory's favorite video game. He picks 5 students to ask.

What is the population?

• All students in 7th grade

• All students in his advisory

• The 5 students he picks

• All students in section 703

Sample in which each individual or object in the entire population has an equal chance of being selected.

• Simple Event

• Sample

• Random Sample

• Scatter Plot

Which statement best describes a random sample of all students in a middle school?

• Of all the students who are on the track team, the first three to finish a race are selected.

• Of all the students who are in the drama club, every third student on the roster is selected.

• Of all the students who complete an assignment, the first, third, and tenth students are selected.

• Of all the students who attend a school-wide assembly, those sitting in every third seat are selected.

?

• Thomas should ask 30 students in the eighth grade.

• Thomas should ask 30 of his closest friends.

• Thomas should ask 30 students in the seventh grade.

• Thomas should ask 30 people eating lunch at McDonalds across the street from school.

Which statement best describes a random sample of all students in a middle school?

• Of all the students who are on the track team, the first three to finish a race are selected.

• Of all the students who are in the drama club, every third student on the roster is selected.

• Of all the students who complete an assignment, the first, third, and tenth students are selected.

• Of all the students who attend a school-wide assembly, those sitting in every third seat are selected.