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04/27 Sampling Methods and Bias vs. Unbiased Review

Total questions: 25

Worksheet time: 20mins

Name
Class
Date
1.
Interview the first 30 students who enter the school in the morning. 
a)
simple random
b)
voluntary response
c)
systematic
d)
convenience
2.
Assign each car in a dealership a number and then use a random-number table to select the cars to be inspected. 
a)
systematic
b)
random sample
c)
convenience
d)
volunteer response
3.
Marianne wanted to know students' opinion on the new schedule at school. She places all students' names in a container and picks out 20 to survey. 
a)
Convenience Sampling
b)
Systematic Sampling
c)
Random Sampling
d)
Volunteer response
4.
Why do we randomly select our samples?
a)
to increase bias
b)
to reduce bias
c)
so we don't get the same answers from everyone
d)
because it's easier
5.
Disneyland often surveys its guests as they exit a restaurant during their visit. The surveyor stands at the restaurant exit, counts the number of people leaving, and surveys every 25th guest.
This is a form of:
a)
Random Sample
b)
Convenience Sampling
c)
Voluntary Response
d)
Systematic Sampling
6.
A teacher wants to know the average time spent doing homework by the students in her class of 20 girls and 5 boys.
She selects the first five who raise their hands.
a)
Systematic
b)
Convenience
c)
Voluntary Response
d)
Simple Random
7.
A teacher wants to know the average time spent doing homework by the students in her class of 20 girls and 5 boys.
She selects the five closest to her desk.
a)
simple random
b)
Voluntary Response
c)
Convenience
d)
Systematic Random
8.
A teacher wants to know the average time spent doing homework by the students in her class of 20 girls and 5 boys.
She picks the student in every 5th seat.
a)
Simple Random
b)
Systematic Random
c)
voluntary response
d)
convenience
9.

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?

a)

yes

b)

no

10.

What sampling method are you using if you survey every 5th person who enters the room.

a)

Convenience

b)

Systematic

c)

Simple Random

11.

What sampling method are you using if you survey the students in the school whose names are picked out of a hat?

a)

Convenience

b)

Systematic

c)

Simple Random

12.

Surveying the students in one home room is an example of which type of sampling method?

a)

Convenience

b)

Systematic

c)

Simple Random

13.

Surveying the students at the next band practice is an example of which type of sampling method?

a)

Convenience

b)

Systematic

c)

Simple Random

14.

What sampling method are you using if you survey every 10th person who enters the cafeteria?

a)

Convenience

b)

Systematic

c)

Simple Random

15.

You assign the students in your class a number and choose 6 numbers from a basket. What sampling method are you using?

a)

Convenience

b)

Systematic

c)

Simple Random

16.

What sampling method are you using if you survey every 12th customer that enters the amusement park.

a)

Convenience

b)

Systematic

c)

Simple Random

17.

You survey every person in the food court at the mall. Which type of sampling method are you using?

a)

Convenience

b)

Systematic

c)

Simple Random

18.
1.  Carlos wants to know the favorite sport of people at his school so he asks his baseball team.
a)
Biased
b)
Unbiased
19.
7. A public library asked every 10th person who entered to name the type of book they were getting
a)
Biased
b)
Unbiased
20.
3.  A hospital wants to open a gym. They ask the night-shift ER staff when they would use the gym.
a)
Biased
b)
Unbiased
21.
4. A company makes DVDs and randomly selects 25 from 1500 to test them to see if they work.
a)
Biased
b)
Unbiased
22.
6. To see who has a computer at home the front office chooses 10 students randomly per grade to ask
a)
Biased
b)
Unbiased
23.
5. The first 100 people at the park Thursday were asked if dogs should be off leashes in the park.
a)
Biased
b)
Unbiased
24.
9. A radio hosts wants to know where his listeners go for vacation.  He takes 10 phone calls
a)
Biased
b)
Unbiased
25.

You are conducting a survey and ask people the following question: Should more money be put into athletic programs or music programs at school? Sample is chosen from students in the band program.

a)

Biased (Unfair)

b)

Unbiased (Fair)