Populations, Samples, Inferences & Predicting Practice Quiz

An aquarium has many attractions, one of which is the shark exhibit. Are the people who visit the shark exhibit the population or the sample of the aquarium? Explain.

• Sample. They are a subset of all of the people at the aquarium.

• Population. They are all the people at the aquarium.

• Both Population and Sample. They are all of the people at the aquarium.

• Neither Population or Sample. They are not at the aquarium.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Students in Mr. Grabarek's Advisory class at Willowcreek wanted to find out the favorite video game of all the students at the school. How could they generate a random sample to survey?

• Choose the first 15 students in Mr. Chlebowski's office 

• Pick 30 6th grade boys that are in Ms. Alvarado's class

• Ask ten 8th graders who get to lunch first 

• Select every 5th student on a list of all of the students at Willowcreek

Tags

CCSS.HSS.IC.B.3

Jacob wants to convince his dad that he should be allowed to increase his weekly internet usage at home from 5 hours a week to 7 hours a week. Can Jacob use this data to present a valid inference that will convince his dad? Explain.

• Yes, most students use the internet 7 or more hours a week

• Yes, most students only use the internet 5 hours a week

• No, most students use the internet 7 or more hours a week

• No, most students use the internet either 9 or 10 hours a week

Tags

CCSS.7.SP.A.2

Raul randomly surveys students in his school and finds that 12 out of 150 students favorite basketball team is the Los Angeles Lakers. If there are 800 students in his school, about how many students are expected to have the Los Angeles Lakers be their favorite basketball team?

Tags

CCSS.7.SP.A.2

Jimmy surveyed a random sample of students at school to collect data about the number of books they read this semester. Use the data in the table and select all valid inferences.

• Students are more likely to have read exactly 2 books than any other number

• More students have read 3 books than have read more than 3 books

• More than 10 students have read at least 2 books

• No students have read 5 books

Tags

CCSS.7.SP.A.2