Section 7-1-Inferences Practice

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

• Sample

• Stratified Sampling Method

• Population

• Voluntary-Response

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

• Systematic Sampling Method

• Sample

• Population

• Bias

A poll is taken from 100 seniors in a high school where the senior class has 575 students. The 100 seniors is an example of a ______________.

• Sample

• Population

Marianne wanted to know students' opinion on the new schedule at school. So she randomly selected 2 students from each class during second period. 
This is a form of:

• Convenience Sampling
• Random Sampling
• Stratified Sampling
• Systematic Sampling

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. 

• Stratified Sampling
• Systematic Sampling
• Random Sampling
• Volunteer response

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

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 a random student to start then picks the student in every 5th seat.

• Random

• Systematic

• Voluntary Response

• Stratified

Interview the first 30 students who enter the school in the morning.

What type of sampling method is this?

• simple random

• voluntary response

• systematic

• convenience

A principal orders t-shirts and wants to check some of them to make sure they were printed properly. She randomly selects 2 of the 10 boxes of shirts and checks every shirt in those 2 boxes.

What type of sampling method is this?

• Simple Sampling

• Stratified Sampling

• Cluster Sampling

• Systematic Sampling

A school chooses 3 randomly selected athletes from each of its sports teams to participate in a survey about athletics at the school.

What type of sampling method is this?

• Simple Sampling

• Stratified Sampling

• Cluster Sampling

• Systematic Sampling