7.SP

Biased or Random?

John wants to find out what the favorite soda flavor is at Menifee County. He decides to ask all the students in Mr. Goldsmith's class as a sample group.

• Biased

• Random

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

Biased or Random?

Reign wants to determine the most popular brand of cereal in all of Kentucky. So he polls all the houses on his street to get a sample.

• Biased

• Random

Tags

CCSS.7.SP.A.1

Biased or Random?

Tyler wants to find out what the most popular pet in all of Menifee Elementary so he puts every student's name into a bucket and polls 30 students.

• Biased

• Random

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

The librarian used the computer system to create a random list of 60 items that are currently
checked out. The list showed 25 fiction books, 15 nonfiction books, 12 movies, and 8 music CDs.
Based on this data, what inference can be made about the types of items that the library
customers check out?

• half as many CDs are checked out than movies
• More non-fiction books are checked out than fiction books
• customers who check out books don't check out movies 
• About twice as many books are checked out than other items

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

• About 50% of the moviegoers were under 21 years old
• Most people who attended the movies on saturday were under 61 years old
• More people over the age of 60 attended the movies on wednesday than on saturday
• About the same percentage of moviegoers ages 41-60 attended movies on wednesday and saturday

• Most students at Parkersburg High School have a camera phone
• About 40% of the students at parkersburg high school have more than 750 photos.
• It is expected that about 60 students at parkersburg high school have fewer than 250 photos
• About a third of the students at parkersburg high school can be expected to have between 501 and 750 photos

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

CCSS.7.SP.B.4

Use the dot plots representing the number of siblings of students in each class.

Visually Compare the 2 Dot Plots

• All the data are 7 siblings or fewer; There is a greater spread in the number of siblings in Mr. Walker’s class.

• All the data are 7 siblings or fewer; There is a greater spread in the number of siblings in Mr. Whites’s class.

• All the data are 6 siblings or fewer; There is a greater spread in the number of siblings in Mr. Walker’s class.

• All the data are 6 siblings or fewer; There is a greater spread in the number of siblings in Mr. Whites’s class

Tags

CCSS.7.SP.B.3

CCSS.7.SP.B.4

What is the range of the dot plot for Mr. Barrett's class?

• The range for Mr. Barrett’s class is 8.5 siblings

• The range for Mr. Barrett’s class is 9 siblings

• The range for Mr. Barrett’s class is 6 siblings

• The range for Mr. Barrett’s class is 8 siblings

Tags

CCSS.6.SP.A.1

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.4

CCSS.6.SP.B.5

Calculate the interquartile range of the following 20 scores

2, 3, 5, 7, 9, 11, 15, 17, 19, 20, 20, 21, 23, 30, 31, 32, 33, 35, 37, 40

• 38
• 20.5
• 17
• 21.5

Find the median.
12, 5, 9, 18, 22, 25, 5

• 9
• 8
• 12
• 18