Random Sampling Methods

Marianne wanted to know students' opinion on the new schedule at school. She places students' names in a container and randomly picks out 20 names. 

• Convenience Sampling
• Systematic Random Sampling
• Simple Random Sampling
• Volunteer response

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

Why do we randomly select our samples?

• for control
• reduce bias
• so we don't get the same answers from everyone
• to eliminate confounding results

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

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.

• Systematic
• Convenience
• Voluntary Response
• Simple Random

Tags

CCSS.7.SP.A.1

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

• no

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

A ___ is a small portion of the population used to gather data from.

• Systematic Sampling Method
• Sample
• Population
• Bias

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.4

A ___ is a large group that includes everything being studied.

• Sample
• Stratified Sampling Method
• Population
• Voluntary-Response

Tags

CCSS.HSS.IC.A.1

Group businesses according to type: medical, retail, restaurant, hotel, other. Then select a random sample of 10 businesses from each type. 

• voluntary response
• random
• stratified
• systematic

If every individual in a population has the same chance of being included in a sample, the sample is a(n) _________ sample.

• Biased

• Systematic

• Simple Random

• Stratified Random

The school librarian wants to determine how many students use the library on a regular basis. What type of sampling method would she use if she chose to use a random number generator to randomly select 50 students from the school's attendance roster.

• Voluntary-Response

• Simple Random

• Stratified Random

• Systematic

Which of the following survey questions is NOT biased?

• What do you like least about rock and roll music - the loudness, the beat, or the mindless lyrics?
• Couches are more comfortable than beds, don't you agree?
• Since cigarettes are dangerous, do you think people should be allowed to smoke in public places?
• Have you ever seen a movie directed by Steven Spielberg?

Tags

CCSS.RL.11-12.6