Grade 7 Statistics Skills Quiz

The mean score of 20 students in a math test is 75. If one more student's score is added, and the new mean becomes 76, what was the score of the added student?

• 96

• 91

• 101

• 76

Tags

CCSS.6.SP.B.5C

A dataset contains the following numbers: 4, 7, 9, 10, 12. What is the median of this dataset?

• 7

• 9

• 10

• 8

Tags

CCSS.6.SP.B.5C

In a class of 30 students, 18 students have dogs, 10 students have cats, and 2 students have both dogs and cats. How many students do not have either a dog or a cat?

• 4

• 2

• 0

• 6

Tags

CCSS.HSS.CP.A.1

What is the mode of the following set of numbers: 3, 7, 8, 3, 12, 7, 3?

• 3

• 7

• 8

• 12

Tags

CCSS.6.SP.B.5C

The range of the set of numbers 5, 8, 12, 15, 20 is:

• 15

• 20

• 5

• 10

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

Given the following data set: 6, 9, 15, 17, 21, what is the interquartile range?

• 12

• 8

• 6

• 10

Tags

CCSS.6.SP.B.5C

Two groups of students were surveyed about the number of books they read over the summer. Group A's median was 5 books, and Group B's median was 7 books. Which group read more books on average?

• Group A

• Group B

• Both groups read the same number on average

• Cannot be determined from the given information

Tags

CCSS.7.SP.B.4

If the mean of five numbers is 14, and four of the numbers are 12, 14, 16, and 18, what is the fifth number?

• 10

• 12

• 14

• 16

Tags

CCSS.6.SP.B.5C

A teacher compares the test scores of two classes. Class X's scores have a mean of 85 and a median of 87. Class Y's scores have a mean of 83 and a median of 85. Which class has a higher average score?

• Class X

• Class Y

• Both classes have the same average score

• Cannot be determined from the given information

Tags

CCSS.6.SP.B.5C

What is the mode of the following set of numbers: 2, 4, 4, 6, 8, 10, 10, 10?

• 2

• 4

• 10

• There is no mode

Tags

CCSS.6.SP.B.5C