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.7.SP.A.1

CCSS.7.SP.A.2

CCSS.7.SP.B.4

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.  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

A bag has 3 red marbles, 2 blue and 4 yellow. What is the theoretical probability of pulling a red?

• 3/10
• 3/9
• 1/9
• 1/3

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

What is the Theoretical Probablility of landing on red?

• 43%
• 33.3%
• 40%
• 36%

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

Roberto wants to know the favorite sport of adults in his hometown.  He surveys 50 adults at a baseball game.  Is this random or biased sampling?

• Random
• Biased

Tags

CCSS.7.SP.A.1

What does "mean" mean?

• average
• middle
• repeats the most
• variation

Tags

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.5