Random Survey of Population

The manager of the zoo would like to survey its visitors to determine their favorite exhibit. Which sample below would be unbiased?

• 20 random people in the food court

• Every 10th person who enters the zoo

• 50 random people at the tiger exhibit

• 3 people who are buying souvenirs

You want to estimate the number of students in a high school who ride the school bus. Which sample is best?

• 4 students in the hallway

• All students in the marching band

• 50 seniors at random

• 100 students at random during lunch

Are the residents of Florida the sample or the population?

• sample

• population

Choose the best sample.

• Sample A

• Sample B

A middle school surveyed random students to find out which elective the students want to take next year. The results are shown here. How many total students were surveyed?

• 20

• 40

• 14

• 6

Kyle wants to find out what is the most popular sport at North Union Middle School. He asks 25 people at random what sport they prefer. What is the population in this question?

• The 25 random people

• All students at North Union

• Kyle

• The students not surveyed

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.

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

What would be the population in this example?
Surveyors in a mall choose shoppers to ask about products they prefer.

• the surveyors

• all shoppers in the mall

• the shoppers who were asked their preferences

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

• 200 adults

• adults in the U.S.

• 75% of adults