Grade 7: Statistics & Probability

A bag contains 9 red marbles, 3 blue marbles, 3 green marbles, and 3 yellow marbles. Determine whether each statement correctly describes the likelihood of an event. Select All that can be True.

• The probability that a yellow marble is selected is 0.

• The probability that a red marble is selected is 1.

• The probabilities of selecting a blue marble , a green marble , or a yellow marble are equal.

Tags

CCSS.7.SP.C.5

Thomas wants to estimate the number of students in his seventh- grade class who are interested in starting a computer club. He needs to create a random sample of students. How should Thomas collect his sample data?

• Thomas should ask 30 students in his technology class.

• Thomas should ask 30 students who are his closest friends.

• Thomas should ask 30 students in the seventh grade.

• Thomas should ask 30 students from the entire school.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Mike’s and Tim’s scores in different subjects are given in the table.

Determine whether each statement about the data is true. Select all that are True.

• The mean of Mike’s scores is less than the mean of Tim’s scores .

• The range of Mike’s scores is less than the range of Tim’s scores .

• The median of Mike’s scores is less than the median of Tim’s scores .

A radio station is giving away t-shirts. In the box of t-shirts there are 5 small shirts, 12 medium shirts, 24 large shirts, and 9 XL (extra-large) shirts. Each person reaches in and randomly pulls out a t-shirt.

Determine whether each statement correctly describes the likelihood of an event based on the box of t-shirts. Select all True statement(s).

• Jen wears a small . It is unlikely she will get her shirt size.

• Dave can wear a medium or large shirt . It is likely he will get a shirt that fits him.

• The radio station gave away all the shirts in the box . About half the people who received a shirt ended up with a medium .

Tags

CCSS.7.SP.C.5

The box plots show information about the number of sit-ups Marquis and Frank did each day for a month.

How much greater is the interquartile range for sit-ups done by Frank than by Marquis?

• 5 sit-ups

• 10 sit-ups

• 15 sit-ups

• 20 sit-ups

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

The middle school administrators are deciding whether to buy new lighting for the auditorium or a new scoreboard for the basketball court. Which sampling method will give the administrators the most accurate idea as to what most students want to be purchased?

• Ask a random sample of the students in the school's drama club.

• Ask the seventh-grade students in the math club.

• Ask the students on the school's basketball team.

• Ask every tenth student in the student directory.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

The box plots show a summary of the number of miles Sally and Harry ran each day over a period of a month.

Determine whether each statement is true based on the data in the box plots. Select all True statements.

• The interquartile range of the number of miles Harry ran is more than the interquartile range of the number of miles Sally ran

• The median of the number of miles Sally ran is equal to the median of the number of miles Harry ran .

• The range of the number of miles Sally ran is more than the range of the number of miles Harry ran .

Tags

CCSS.7.SP.B.4

A representative sample of 50 seventh-grade students is surveyed. Each student is asked what flavor ice cream he or she prefers. The table shows the responses.

Select all of the statements that are valid based on the results.

• A. Of the seventh-grade students surveyed, 25% prefer chocolate.

• B. In a group of 200 seventh-grade students, it is expected that 100 would prefer chocolate.

• C. There are 2.5 times as many seventh-grade students who prefer chocolate as prefer vanilla.

• D. In a group of seventh-grade students where 20 prefer mint, it is expected that 21 would prefer strawberry.

Tags

CCSS.7.SP.A.2

• They most likely differ because the sample size is too small.

• They most likely differ because a card is drawn more than 1 time.

• They most likely differ because the predicted probability is inaccurate.

This table shows outcomes of a number cube with six equal sides numbered 1, 2, 3, 4, 5, and 6.

Based on the outcomes, enter the number of times the number cube is expected to land on 5 if it is rolled 40 times.

• 5 times

• 6 times

• 7 times

• 8 times

Tags

CCSS.7.SP.C.6