Statistics & Probability 7th TPrep

The height in inches of seven boys and seven girls in the are listed below:

Boys: 52, 54, 55, 62, 66, 68, 69

Girls: 46, 49, 51, 52, 60, 61, 65

Which statement correctly compares the range and median of the heights of the boys and girls?

• Both the median and the range for the boys are less than the median and range for the girls.

• Both the median and the range for the boys are greater than the median and range for the girls.

• The median of boys is greater than the median for the girls, but the range of the girls is higher than the range for the boys.

• The median of the boys is greater than the median for the girls, but the range of the girls is less than the range for the boys.

Tags

CCSS.7.SP.B.4

The pet store needs to determine what toys his customers are most interested in buying. The manager conducted two random surveys. The survey results are shown below.

Sample 1

Ball 22

Rope 30

Frisbee 13

Sample 2

Ball 28

Rope 17

Frisbee 20

Select the TWO inferences that can be made based on the data.

• The pet store should order more balls than the other type of items combined.

• The pet store should order more balls and ropes than frisbees.

• The pet store should order more balls than any other toy.

• The pet store should order more ropes than any other toy.

• The pet store should order twice as many balls and ropes than frisbees.

Tags

CCSS.7.SP.A.2

At a bus stop, the probability of a bus being late is 0.38. Which of the following statements is best supported by this probability?

• Buses are less likely to be on time.

• Buses are more likely to be on time.

• Buses are neither likely or unlikely to be on time.

• All buses are on time.

Tags

CCSS.7.SP.C.5

Which probabilities describe an event that is more likely to occur than to not occur? Select ALL that apply.

• 0.7

• 0.67

• 0.1

• 0.25

• -1

Tags

CCSS.7.SP.C.5

On a game show, a contestant randomly chooses a briefcase and wins the amount inside. There is 1 briefcase with 1 million dollars. There are 2 briefcases with $100,000. There are 3 briefcases with $10,000. There are 4 briefcases with $1,000. What is the probability that a contestant picks $1,000?

• 4

• 1/10

• 4/10

• 1/4

Tags

CCSS.7.SP.C.7B

A basket contains 4 colors of highlighters. A highlighter is randomly selected from the basket, and then given to each student. A highlighter was selected 80 times.

HIGHLIGHTERS

Yellow ?

Blue 13

Green 16

Orange 24

What is the probability of selecting a yellow marker?

• 0.925

• 0.05

• 37

• 0.4625

Tags

CCSS.7.SP.C.6

This season the kicker made 16 out of 20 field goals he has attempted. Based on his record, what is the probability he will make his next field goal?

• 16

• 16/20

• 4

• 4/20

Tags

CCSS.7.SP.C.6

100 students were surveyed at school to determine their favorite literary genres. The school has 450 students.

% Favorite Literary Genre

Realistic Fiction: 30

Historical Fiction: 5

Science Fiction: 53

Non-fiction: 5

Which of the following predictions could be made about the students in the school. Select ALL that apply.

• More than 1/2 of the students would say that science fiction is their favorite literary genre.

• About 30 students would say that realistic fiction is their favorite literary genre.

• Approximately 45 students would say that historical fiction or non-fiction are their favorite literary genre.

• More students like science fiction than all other genres combined.

• Less students like historical fiction than non-fiction.

Tags

CCSS.7.SP.A.2

Students were surveyed on how many hours they spend each week exercising and playing video games. How does the data compare?

• Overall, students exercise more than they play video games.

• Overall students exercise less than they play video games.

• There is no difference in the number of hours people exercise and play video games.

• All students exercise and play video games the same amount of time each week.

Tags

CCSS.7.SP.B.4

A survey of 100 out of 10,000 voters for the next election.

- 44 voters support Candidate A.

- 30 voters support Candidate B.

- 26 voters support Candidate C.

A total of 10,000 people will vote in the next election. Which predictions can be made about the town council election? Select ALL that apply.

• About 1400 people will vote for Candidate B

• Candidate A will beat Candidate B by about 1400 votes.

• Candidate C will be in third place.

• About 1300 people will vote for Candidate C.

• About 4,400 people will vote for Candidate A.

Tags

CCSS.7.SP.A.2