7-3 Population and Samples

A state fair had 1,019,887 people in attendance. The fair committee performed a survey. The question was, “What do fairgoers enjoy most about the fair?” Of those who responded, 83% reported eating traditional foods. Which group of people represents the sample group?

• Fair goers who like traditional foods
• The fair committee
• Fair goers who responded to the survey
• All fair goers

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

A radio station in Raleigh, NC wants to know the most popular song of the week. The DJ surveys random listeners who call in throughout the week. What is the population of the DJ’s survey?

• all the people in Raleigh, NC
• listeners of this radio station
• the listeners who call the station
• the most popular song of the week

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

_______ is a part of a group being surveyed.

• Sample
• Population
• Random Sample
• Quartile

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

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.

• simple random
• representative
• Convenience
• Systematic 

Tags

CCSS.7.SP.A.1

3. A public library asked every 10th person who entered to name the type of book they were getting.

• A. Biased
• B. Unbiased

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

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

• A. Biased
• B. Unbiased

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

Identify the Population:
Gwinnett County Public Schools randomly selected 230 teachers to find out which technology resource is the most effective. 30 teachers chose Safari Montage, 45 selected Learn Zillion, 100 chose Ed Puzzle, and 55 chose Kahoot. GCPS concluded that all teachers prefer Ed Puzzle.

• 230 Teachers
• All teachers
• 100 Teachers
• 55 Teachers

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

Identify the Population:
Members of the Drama Club plan to sell popcorn as a fundraiser for their Shakespeare production. They survey 75 students at random about their favorite flavors of popcorn. 33 students like butter, 15 like cheese, and 27 like caramel.

• 33 Students
• 75 Students
• All Students
• 27 Students

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

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.B.3

A gaming website wanted to find out which console its visitors owned.

Which choice best represents the population?

• Visitors to the 3DS section.

• All of the website visitors.

• Visitors to the PS4 section.

• Visitors who are on the website for more than 5 minutes.

Tags

CCSS.HSS.IC.B.3

CCSS.HSS.IC.A.1