Population and Samples TN Ready Review

Leslie surveyed the 9 youngest students in the elementary school.  Is this sample of the students in the school likely to be representative of all the students in the school?

• yes
• no

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

At a middle school, the 7th graders will conduct a survey for where 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.HSS.IC.A.1

You want to know how many students catch the bus to go home.  You go to the bus stop and ask students how they go home from school.  Is this a random sample or biased sample?

• BIASED
• RANDOM

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

A musician wanted to see what people who bought his last album thought about the songs.

Which choice best represents a sample?

• Every person who bought the album.

• A selection of people who didn't want to buy the album.

• 250 girls who bought the album.

• A selection of 3,294 people who bought the album.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

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.7.SP.A.1

CCSS.HSS.IC.A.1

The school board wants to decide if they should more money be put into athletic programs or music programs at school. They survey the students in the band program. Is this survey biased or unbiased?

• Biased

• Unbiased

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

You take a survey of Mr. Thiele's Math class asking, about their favorite desserts.  you ask 11 students and 6 of them say cookies.  If there are 770 students in the school, estimate how many students would say cookies.

• about 44
• about 110
• about 438
• about 66

Tags

CCSS.7.SP.A.2

In a sample of 24 seventh graders, there are 7 students with April birthdays. Suppose there are 432 students in seventh grade. Estimate how many seventh grade students have April birthdays.

• 56 students

• 126 students

• 18 students

• 7 students

Tags

CCSS.7.RP.A.2C

In a representative sample of 120 vehicles in a parking lot, there are 18 vans. If there are 960 vehicles, estimate the number of vans in the parking lot.

• 8 vans

• 18 vans

• 144 vans

• 126 vans

Tags

CCSS.7.RP.A.2C

You want to find the number of biography books in the library, if there are 2500 books. The librarian sampled a section of the library and found that there were 9 out of 20 books that were biographies. Based on this sample, what is the estimate of biography books in the library?

• 1125 books

• 125 books

• 180 books

• 1375 books

Tags

CCSS.7.SP.A.2