Free Printable Samples and Populations

Worksheets

Samples and Populations

Total questions: 18

Worksheet time: 17mins

Name

Class

Date

_______ is a part of a group being surveyed.

Sample

Population

Random Sample

Quartile

_________ is a sample in which each individual or object in the entire population has an equal chance of being selected.

Sample

Population

Random Sample

Quartile

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

Sample

Population

Random Sample

Quartile

True or False: all samples lead to a good prediction about an entire population.

True

False

A school surveys all 7th grade boys to determine what to sell in the school store. This sample is _________.

Biased

Unbiased

Representative

Peanut butter cups

A school survey asked 50 girls to identify their favorite items on the school cafeteria menu. This sample is ________________.

Biased

Unbiased

Representative

Numerical

A student wants to know which type of pizza the students at his high school prefer. Which option would give a unbiased, representative sample:

Asking all the students in the hot lunch line.

Asking 10 random students from each homeroom.

Asking every other student who gets off a school bus.

Asking all the 10th graders.

A city council member wanted to know how her constituents felt about a planned rezoning. She randomly selected 75 names from the city phone directory and conducted a phone survey.

The population is everyone listed in the city phone directory; the sample is the 75 people selected.

The population is residents of the city; the sample is the registered voters in the city.

The population is registered voters in the city; the sample is everyone listed in the city phone directory.

A safety inspector conducts air quality tests on a randomly selected group of 7 classrooms at an elementary school.

The population is all classrooms in the district; the sample is the 7 classrooms selected.

The population is all classrooms in the elementary school; the sample is the 7 classrooms selected.

The population is all elementary students in the school; the sample is the students in the 7 classrooms selected.

10.

Choose the true statement(s) about the census and sample shown.

The sample could be considered too small.

The sample is biased because is does not include everyone.

The sample is representative of the population's sub-groups.

11.

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?

The students will be selected from the choir

The students will be selected randomly throughout the school

The students will be selected on Wednesday afternoon before the choir concert

The choir director will select five students from each of the forty homerooms in the school

12.

The TV station wants to get the opinion of viewers on the look of a new game-show set. The station's staff calls random people in the phone book. Is this biased or unbiased?

Biased

Unbiased

13.

I survey a senior citizen center to gain information about the population of NE Oklahoma. Which of the following best describes my population sample?

Biased, sample is randomly taken or representative of population.

Biased, sample is not randomly taken or representative of population.

Representative, sample is randomly taken & representative of population.

Representative, sample is not randomly taken or biased in terms the of population.

14.

I surveyed 100 people at a grocery store by selecting every 3rd person that entered, does this sample represent the local population?

Yes, it is random and unbiased.

Yes, it is random and biased.

No, while it is random, it is also biased.

No, while it is random, it is also unbiased.

15.

I drew 10 names from a hat containing the names of every student that I teach, what type of sample have I taken?

A random sample.

A biased sample.

16.

4. A company makes DVDs and randomly selects 25 from 1500 to test them to see if they work.

Biased

Unbiased

17.

Ana wants to know the average student’s opinion of the tardy policy at her school. Which group of students should she survey in order to achieve the most accurate results?

thirty students who are often tardy

thirty students who are rarely tardy

thirty of her friends

thirty randomly selected students from her school

18.

To determine how often people eat out, every tenth person entering a fast food restaurant is surveyed.

Biased Sample

Unbiased Sample

100 %

Samples and Populations

Total questions: 18

Worksheet time: 17mins

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