Quiz about Scatter Plot & Line of Best Fit

Question 1

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books. Use the trend line to predict how many chapters would be in a book with 180 pages.

Accepted Answer

18 chapters

Answer

12 chapters

Answer

15 chapters

Answer

21 chapters

Question 2

The number of siblings you have and your weight.

Accepted Answer

No correlation

Answer

Positive correlation

Answer

Negative correlation

Answer

All of the above

Question 3

What type of correlation (association)?
The outside temperature and the amount of layers you wear.

Accepted Answer

Negative correlation

Answer

Positive correlation

Answer

No correlation

Answer

All of the above

Question 4

Find the slope for the trend line using points (2,2) and (4,3)

Accepted Answer

1/2

Answer

2

Answer

-2

Answer

-1/2

Question 5

Which scatter plot shows a linear relationship between x and y?

Accepted Answer

Graph C

Answer

Graph A

Answer

Graph B

Answer

Graph D

Question 6

What is the correlation?

Accepted Answer

No correlation

Answer

Negative correlation

Answer

Positive correlation

Answer

All of the above

Question 7

As the age of the car increases, its value decreases. Which scatterplot represents this relationship?

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 8

Question 8.

Accepted Answer

150 turtles

Answer

440 turtles

Answer

40 turtles

Answer

90 turtles

Question 9

What is a line of best fit used for?

Accepted Answer

To make predictions

Answer

To make the graph look pretty

Answer

To connect the points

Answer

To make it look like you know what you are doing

Question 10

What type of correlation does this graph have?

Accepted Answer

positive

Answer

negative

Answer

none

Answer

all of the above

Question 11

What type of correlation does this scatter plot show?

Accepted Answer

negative linear association

Answer

positive linear association

Answer

no association

Answer

nonlinear association

Question 12

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books. Use the trend line to predict how many chapters would be in a book with 180 pages.

Accepted Answer

190 pages

Answer

150 pages

Answer

170 pages

Answer

210 pages

Question 13

About how many male math teachers were there in 2006?

Accepted Answer

35

Answer

15

Answer

30

Answer

45

Question 14

Write the equation for the line.

Accepted Answer

y = 46x

Answer

y = -1/2x

Question 15

Charlie rented a moving truck. He paid a daily fee plus a per-mile fee to rent the truck. The equation below represents the daily amount Charlie paid for the truck if he drives it x miles.
y=0.5x+10
What does the slope of the graph of this equation represent?

Accepted Answer

The per-mile fee for the moving truck

Answer

The daily fee for the moving truck

Answer

How much Charlie paid for the truck

Answer

The number of miles he drove

Question 16

Rich is a member of a gym. He pays a monthly fee plus a per-visit fee. The equation below represents the monthly amount Rich pays for his membership to the gym per month for x visits.
y=3x+10
What does the y-intercept of the graph of this equation represent?

Accepted Answer

The monthly fee

Answer

How much Rich pays per visit

Answer

The number of times Rich goes to the gym

Answer

The total cost at the end of the month

Question 17

Which of the following could be a possible line of best fit for the data?

Accepted Answer

y = -5/2x + 20

Answer

y = -x + 19

Answer

y = x + 20

Answer

y = 2/3x + 15

Question 18

Which of the following could be a possible line of best fit for the data?

Accepted Answer

y = 5/6x + 490

Answer

y = 3x + 0

Answer

y = -2x + 470

Answer

non linear

Question 19

Determine the predicted income if 22 hours were worked on an assembly job.

Accepted Answer

$449.60

Answer

$207.30

Answer

$691.90

Answer

$543.30

Question 20

Is this line an accurate line estimate of best fit for the data?

Accepted Answer

Yes

Answer

No

Question 21

Is this line an accurate line estimate of best fit for the data?

Accepted Answer

No

Answer

Yes

Question 22

What is the y-intercept?

Accepted Answer

3

Answer

-2

Answer

2

Answer

-3

Question 23

What is the equation of the line of best fit?

Accepted Answer

y = -25x + 170

Answer

y = -5/8x + 170

Answer

y = 25x + 170

Answer

y = 5/8x + 170

Question 24

Use the line of best fit to approximate rate of change relative to the scatter plot above.

Accepted Answer

-5/7

Answer

7/5

Answer

5/7

Answer

-7/5

Question 25

Which scatter plot shows a linear relationship between x and y?

Accepted Answer

Graph C

Answer

Graph A

Answer

Graph B

Answer

Graph D

Question 26

Which of the following lines represents the line of best fit for the scatter plot?

Accepted Answer

There is no line of best fit for this graph

Answer

A

Answer

B

Answer

C

Question 27

Which of the following lines represents the line of best fit for the scatter plot?

Accepted Answer

B

Answer

A

Answer

C

Answer

D

Question 28

Which of the following lines represents the line of best fit for the scatter plot?

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 29

Which of the following lines represents the line of best fit for the scatter plot?

Accepted Answer

D

Answer

There is no line of best fit for this graph.

Answer

B

Answer

C

Question 30

Which of the following lines represents the line of best fit for the scatter plot?

Accepted Answer

A

Answer

B

Answer

C

Answer

D

Question 31

Which of the following lines represents the line of best fit for the scatter plot?

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 32

Which of the following lines represents the line of best fit for the scatter plot?

Accepted Answer

There is no line of best fit for this graph because there is no trend.

Answer

A

Answer

B

Answer

C

Question 33

Which of the following lines represents the line of best fit for the scatter plot?

Accepted Answer

There is no line of best fit for this graph because there is no trend.

Answer

A

Answer

B

Answer

C

Question 34

Which of the following lines represents the line of best fit for the scatter plot?

Accepted Answer

There is no line of best fit for this graph because there is no trend.

Answer

A

Answer

B

Answer

C

Question 35

Which of the following lines represents the line of best fit for the scatter plot?

Accepted Answer

A

Answer

B

Answer

C

Answer

D

Question 36

What is the equation of the line of best fit?

Accepted Answer

y = -25x + 170

Answer

y = -5/8x + 170

Answer

y = 25x + 170

Answer

y = 5/8x + 170

Question 37

What is the line of best fit?

Accepted Answer

y = 5/3x + 375

Answer

y = 1/3x + 475

Answer

y = 5/3x + 3

Answer

y = 1/3x + 375

Scatter Plot & Line of Best Fit

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