Topic 6 - Use Sampling to Draw Inferences Review

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

• 230 Teachers
• All Wicomico County Teachers
• Students
• Wicomico County Public Schools

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

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.HSS.IC.A.1

CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.4

CCSS.HSS.ID.B.5

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

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.4

At a middle school, the 7th graders will conduct a survey to decide where they want to go on a field trip. Which method will result in the least biased decision?

• to randomly ask 8th grade students who went on a field trip last year
• to randomly choose some 7th grade students to select a location
• to ask all 7th grade teachers and administrators for a location
• to ask the student council to choose a location

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

Unbiased sampling is:

• when you choose the group you think will give you the answer you want, accept volunteers or survey by convenience
• when any member of the population is equally likely to be chosen for the sample

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

To determine the most popular children’s programs, a television station asks parents to call in and complete a phone survey.

• Biased Sample

• Unbiased Sample

Tags

CCSS.7.SP.A.1

Airline boarding passes are marked with red stars at random to decide which passengers should have their carry-on luggage inspected.

• Biased Sample

• Unbiased Sample

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

Airline boarding passes are marked with red stars at random to decide which passengers should have their carry-on luggage inspected.

• Biased Sample

• Unbiased Sample

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Carlos wants to know the favorite sport of people at his school so he asks his baseball team.

• Biased

• Unbiased

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

3.  A hospital wants to open a gym. They ask the night-shift ER staff when they would use the gym.

• Biased
• Unbiased

Tags

CCSS.HSS.IC.A.1