Free Printable SAMPLE AND POPULATION PRACTICE 2

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SAMPLE AND POPULATION PRACTICE 2

Total questions: 20

Worksheet time: 3590secs

Name

Class

Date

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

Sample

Population

Random Sample

Quartile

The part of the population being studied

population

sample

random

Population or Sample?

A police officer measures the speed of all the cars that pass a specific point on the road during his shift.

Population

Sample

Identify the population and sample in the following survey:

To determine the number of students who carry backpacks in school, Tina collects data on the first 100 students who enter the building.

Which is the POPULATION

students

first 100 students

2. When a sample does not accurately represent the population it is a:

A. Unbiased sample

B. Biased sample

Elise, a supermarket employee, approached 50 random customers and asked whether they would be willing to discuss what they like most about the store. She interviewed the 22 who said yes. Is this sample of the supermarket's customers likely to be biased?

yes

Select the sampling method that would most fairly represent the people in the viewing area.

100 people that are trying out for a reality TV show

100 students at your middle school

Every 100th person at a shopping mall

A newspaper randomly chooses 100 names from its subscriber list and then surveys those subscribers to find out if they read the sports section. This sample is ........

unbiased

biased

All seniors at Cedar Bluff School is an example of

a sample

a population

an outlier

10.

1. A sample in which every person, object, or event has an equal chance of being selected.

A. Random sample.

B. Biased sample.

11.

2. When a sample does not accurately represent the population it is a:

A. Unbiased sample

B. Biased sample

12.

3. A public library asked every 10th person who entered to name the type of book they were getting.

A. Biased

B. Unbiased

13.

4. Carlos wants to know the favorite sport of people at his school so he asks his baseball team.

A. Biased

B. Unbiased

14.

5. A hospital wants to open a gym. They ask the night-shift ER staff when they would use the gym.

Biased

Unbiased

15.

7. The choir director in a high school wants to know how the students in the school feel about singing. If the director selects 100 girls and 100 boys to complete a survey, which method will result in a biased sample?

A. The students will be selected from the choir.

B. The students will be selected randomly throughout the school.

16.

8. At a middle school, the 7th graders will conduct a survey for where to go on a field trip.
Which method will result in the least biased decision?

A. To randomly ask 8th grade students who went on a field trip last year.

B. To randomly choose some 7th grade students to select a location.

17.

10. A teacher decides to survey the students in her classes to find out their opinion on the new menu in the cafeteria. Is this biased or unbiased?

Biased

Unbiased

18.

11. Larger random sample sizes are more representative of a population.

A. True

B. False

19.

14. Biased questions lead people to answer a particular way.

A. True

B. False

20.

15. Is the following question biased?
Are stoplights needed at the intersection of Main and Perry Streets?

A. Not biased/ Unbiased

B. Biased

100 %

SAMPLE AND POPULATION PRACTICE 2

Total questions: 20

Worksheet time: 3590secs

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