Quiz: Statistics and Probability

Gabe took a survey of students in his school to see how many have a pet.  He surveyed 48 students, and 30 said they have a pet.   Based on Gabe’s survey, if there are 600 students in his school, he might expect ____ of them to have a pet.

• 375
• 96
• 160
• 348

Tags

CCSS.6.RP.A.3B

Morgan rolled a number cube 20 times.  The cube landed on the number 6 five times.  What is the experimental probability that Morgan will roll a number 6 the next time she rolls the number cube?

• 3/10
• 1/4
• 1/6
• 1/5

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.6

Gabby conducted an experiment with a spinner.  Based on this data, how many times can she expect to spin a 2 in the next 25 spins?

• 24
• 6
• 12
• 14

Tags

CCSS.6.SP.A.1

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.5

Ms. Sajewski surveyed her students on the number of book they read last summer. Which is NOT true?

• The mode number of books read is one
• The median number of books read is 1.5
• Ms. Sajewski surveyed 20 students
• The mean number of books read is 3.25

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

Cole spun the spinner twice. What’s the probability of the spinner landing on the 3 twice in a row?

• 1/4
• 1/36
• 1/6
• 2/3

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

CCSS.7.SP.C.8

A survey asked middle school students which of four intermural sports they would most like to have at their school.  What is the size of the sample?

• 90
• 16
• 34
• 80

Tags

CCSS.6.SP.B.5

A survey asked middle school students which of four intermural sports they would most like to have at their school.  The results are shown in the table.  If there are 750 students in the school, how many students would you predict to choose flag football?

• 150
• 42
• 142
• 118

Tags

CCSS.6.EE.B.6

CCSS.6.EE.B.7

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.5

The graph compares Homework Time versus TV Time for a group of high school students.What is the interquartile range of homework time?

• 40 minutes
• 190 minutes
• 28 minutes
• 12 minutes

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

The graph compares Homework Time versus TV Time for a group of high school students. Which statement is NOT true?

• The median for TV Time is the same as the 3rd quartile for Homework Time
• The median minutes for Homework Time is 12 less than the median minutes for TV Time
• 75% of those surveyed watched TV for at least 15 minutes
• 1/4 of students spent at least 20 minutes on homework

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

Sama tracked the hours of sleep that she got over the course of a week: 10, 9, 7, 9, 9, 7, 6    Which is a reasonable prediction of the mean number of hours of sleep that Sama gets in a night?

• 7
• 8
• 9
• 10

Tags

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.5