Sampling

Identify the Population: Hartford County Public Schools randomly selected 230 teachers to find out which technology resource it's teachers feel is the most effective.

• 230 Teachers
• All Hartford County Teachers

• Students
• Hartford County Public Schools

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Identify the Sample:
A restaurant wants to know if their customers buy dessert when they eat out. As people leave the restaurant one evening, 20 people are surveyed at random. Eight people say they usually order dessert when they eat out. The restaurant concluded that most customers do not order dessert.

• 20 customers
• All customers
• 8 customers
• Dessert

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

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

• Sample

• Population

• Random Sample

• Quartile

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

_______ is a part of a group being surveyed.

• Sample

• Population

• Random Sample

• Quartile

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Why do we randomly select our samples?

• to control every aspect
• reduce bias
• so we don't get the same answers from everyone
• because it is easier to do

Tags

CCSS.HSS.IC.B.3

How do we reduce variability?

• Increase randomness.

• Increase sample size.

• Decrease randomness.

• Decrease sample size.

A student wants to know which type of pizza the students at FHS prefer. Which option would give an unbiased, representative sample:

• Asking all the students in the hot lunch line.

• Asking 5 random students from each Hawks Nest.

• Asking every other student who gets off a school bus.

• Asking all the 12th graders.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Dylan wants to know how the students at his school rate the cafeteria.  He surveyed his school's basketball team to rate the school cafeteria. Is this a biased sample of the school's population?

• Yes, because it is a convenience survey
• No, the basketball team has the smartest students
• Yes, because it's voluntary survey
• No, he should have asked the football team

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

You want to know what is the most favorite sport of 11th graders at FHS. You ask 11th graders who want to participate to go to the office 5th period to complete a survey. This is...

• Biased, because it is a convenience sample

• Unbiased

• Biased because it is an cluster sample

• Biased because it is a voluntary response sample

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

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

• Sample

• Population

• Random Sample

• Stratified Sample

Tags

CCSS.HSS.IC.B.3