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Unit 6 - TEST

Posljednje ažuriranje 3 months ago

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The coaches of a group debate team answered a survey about hours of debate, team practice, and number of team wins.

The graph shows the results of the survey.

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Pitanje 1

1.

Describe the association seen on the scatterplot.

Strong Negative Association

Strong Positive Association

Weak Positive Association

No Association

Weak Negative Association

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Pitanje 4

4.

As the age of a car increases, its value decreases.
Which scatter plot best represents this relationship?
For each graph, value is the variable on the y-axis and car age is the variable on the x-axis.

(a)

(b)

(c)

(d)

Pitanje 5a

5a.

What type of association is indicated in the scatterplot?

(a) Positive

(b) No association

(c) Negative

Pitanje 5b

5b.

Based on these results, if a team practices 4 hours per week next season, which is the best estimate of the number of debates the team can expect to win?
Choose the BEST answer

(a) 1 debate

(b) 12 debates

(c) 16 debates

(d) 22 debates

Jasmine and her father planted a tree in their front yard 8 years ago. The scatterplot shows how the height of the tree increased each year.

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Pitanje 6a

6a.

Which of the following most closely approximates the equation of the line of best fit for the data?
FEEL FREE TO DRAW A LINE OF BEST FIT IN THE SHOW YOUR WORK SPACE TO HELP YOU ANSWER THIS QUESTION!

A. y = -2x + 2

B. y = 2x + 2

C. y = -1/2x + 2

D. y = 1/2x + 2

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A 2-way table was created from the 9th graders and transportation survey.

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Pitanje 2

2.

Describe the association seen on the scatterplot.

No Association

Strong Negative Association

Weak Positive Association

Strong Positive Association

Weak Negative Association

Pitanje 3

3.

Describe the association seen on the scatterplot.

Weak Negative Association

Strong Positive Association

Strong Negative Association

No Association

Weak Positive Association

Pitanje 6b

6b.

Talk about what the slope means in this problem!
Use the value in your explanation!

Pitanje 6c

6c.

Talk about what the y-intercept means in the problem!
Use the value in your explanation!

Pitanje 7

7.

Use this space to fill the table first.

Pitanje 8

8.

Pitanje 9

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Pitanje 10

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Pitanje 11

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Pitanje 12

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Pitanje 13

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Pitanje 14

14.

What percentage of 14 year-olds walk to school?
Enter a percentage like 50%. Round your answer to the nearest whole percentage.

Pitanje 15

15.

What percentage of 15 year-olds walk to school?
Enter a percentage like 50%. Round your answer to the nearest whole percentage.

Pitanje 16

16.

What percentage of students who walk to school are 15 year-olds?
Enter a percentage like 50%. Round your answer to the nearest whole percentage.

Students were asked to report their age and how many times a day they typically wash their hands.

Of the 738 13 year-olds, 66 said they wash their hands at most once a day, 583 said two to seven times per day, and 89 said eight or more times per day.

Of the 14 year-olds, 2 said they wash their hands at most once a day, 160 said two to seven times per day, and 42 said eight or more times per day.

Pitanje 17

17.

Use this space to fill that table first.

Pitanje 18

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Pitanje 19

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Pitanje 20

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Pitanje 21

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Pitanje 22

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Pitanje 23

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Pitanje 24

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Pitanje 25

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Pitanje 26

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Pitanje 27

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Pitanje 28

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Pitanje 29

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Pitanje 30

30.

What percentage of those surveyed are 14 years old?
Enter a percentage like 70%. Round your answer to the nearest whole percentage.

Pitanje 31

31.

What percentage of those who wash their hands 8 or more times per day are 13 year olds?
Enter a percentage like 70%. Round your answer to the nearest whole percentage.

Pitanje 32

32.

What is the percentage that those who are 13 wash their hands 8 or more times a day?
Enter a percentage like 70%. Round your answer to the nearest whole percentage.