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Scatter Plots/Line of Best Fit

Total questions: 61

Worksheet time: 2hrs 8mins

Name
Class
Date
1.

What kind of slope would the graph of the model have?

a)

Positive

b)

Negative

c)

There's no association

2.

What kind of slope would the graph of the model have?

a)

Positive

b)

Negative

c)

There's no association

3.

What kind of slope would the graph of the model have?

a)

Positive

b)

Negative

c)

There's no association

4.

Which graph has no association?

a)

A

b)

B

c)

C

d)

D

5.
What is the correlation between length of running start and distance of jump?
a)
positive:  the further you run the further you jump
b)
negative: the less you run the less distance of your jump
c)
positive: the further your running start the less your distance
6.
Describe the correlation in the graph shown.
a)
Strong Negative
b)
Strong Positive
c)
Weak Negative
d)
Weak Positive
7.
Describe the correlation in the graph shown.
a)
Weak Negative
b)
Weak Positive
c)
Strong Negative
d)
Strong Positive
8.

a)

F

b)

G

c)

H

d)

J

9.

What do you call when most of the data is located in a certain area on a graph?

a)

Cluster

b)

Gap

c)

Peak

d)

Data Party

10.
A point far away from the other data points is considered a(n) ____?
a)
cluster
b)
scatter plot
c)
outlier
d)
variable
11.

Identify any outliers.

a)

Outlier at x = 18

b)

Outlier at x = 12

c)

Outlier at x = 6

d)

There aren't any outliers in this graph.

12.

Identify any clusters.

a)

Cluster at x = 14

b)

Cluster at x = 18

c)

Cluster at x = 24

d)

There aren't any noteworthy clusters in this graph.

13.

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

a)

Yes

b)

No

14.

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

a)

Yes

b)

No

15.

What are the coordinates of the outlier?

a)

(1,9)

b)

(9,1)

c)

(2,2)

d)

y=x

16.

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

a)

Graph A

b)

Graph B

c)

Graph C

d)

Graph D

17.
Based on the trend line, about how many guests should be expected if the temperature is around 80 degrees?
a)
8,300
b)
7,300
c)
8
d)
9,300
18.
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. 
a)
12 chapters
b)
15 chapters
c)
18 chapters
d)
21 chapters
19.
Which of the following lines represents the line of best fit for the scatter plot?
a)
A
b)
B
c)
C
d)
D
20.
What is the meaning of the y-intercept?
a)
The weight in the bucket increases by 1 pound per pound of sand.
b)
Before sand is put in the bucket, it weighs 1 pound.
c)
The starting weight of the sand is 1 pound.
d)
The weight in the bucket decreases by 1 pound per pound of sand.
21.
The graph shows the candle's height (cm) as it burns (minutes).  What does the slope MEAN?
a)
The candle burns 1 cm every minute.
b)
The candle burns 2 cm every 2 minutes.
c)
The candle burns 2 cm every minute.
d)
The candle burns 1 cm every 2 minutes.
22.

What is the age of the tree that is 8 feet tall?

a)

6 Years

b)

7 Years

c)

8 Years

d)

9 Years

23.

How many trees are 3 years old?

a)

1

b)

2

c)

0

d)

3

24.

How many trees are more than 6 feet tall?

a)

5

b)

1

c)

2

d)

4

25.

If a squirrel climbs to the top of each tree that is 6 years old, how far has the squirrel climbed?

a)

2 ft

b)

18 ft

c)

10 ft

d)

11 ft

26.

Which height has the greatest frequency?

a)

3 ft

b)

10 ft

c)

5 ft

d)

6 ft

27.

JoBeth draws a scatter plot that shows as the outside temperature increases, sales at her lemonade stand increase. Which best describes the scatter plot?

a)

The points show that as x-values increase, y-values increase.

b)

The points show that as x-values increase, y-values decrease.

c)

The points show that as x-values decrease, y-values stay the same.

d)

The points show that as x-values decrease, y-values increase.

28.

Which of the following best describes a scatter plot that shows no relationship between the x-values and the y-values?

a)

As x-values increase, the points are higher on the graph.

b)

As x-values decrease, the points are higher on the graph.

c)

The points are scattered around the graph.

d)

The points form a horizontal line.

29.

Which statement best describes the relationship between time shopping online and the number of stores visited?

a)

As the number of hours increases, the number of stores decreases.

b)

As the number of hours increases, the number of stores increases.

c)

The number of hours and the number of stores are about the same.

d)

As the number of hours decreases, the number of stores increases.

30.

How much time did the person who visited 3 stores spend shopping online?

a)

2 Hours

b)

10 Hours

c)

4 Hours

d)

3 Hours

31.

Mr. Reynosa plans to shop online for 4 hours for two days in a row. What is a reasonable prediction of how many stores he will visit?

a)

10

b)

8

c)

12

d)

22

32.

Molly collected data about the number of hours students studied and their scores on a test. The results are shown in the scatter plot. Which statement about the data is true?

a)

As study hours increase, test scores decrease.

b)

As study hours increase, test scores increase.

c)

As study hours increase, test scores stay the same.

d)

As study hours decrease, test scores increase.

33.

Which is a reasonable prediction of a test score for a student who studied for 1/2 hour?

a)

80

b)

100

c)

50

d)

5

34.

Which relationship could be represented by this scatter plot?

a)

As the number of muffins in a box increases, the price increases.

b)

As the speed of a car increases, the distance the car travels increases.

c)

As the population of a city increases, the number of schools in the

city increases.

d)

As the number of daylight hours increases, the number of night hours decreases.

35.

As the area of a garden increases, what happens to the number of plants in a garden?

a)

The number of plants decreases.

b)

The number of plants stays the same

c)

The number of plants increases faster.

d)

The number of plants increases.

36.
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. 
a)
12 chapters
b)
15 chapters
c)
18 chapters
d)
21 chapters
37.
If Joe worked 30 hours, how much is he expected to earn?
a)
$600
b)
$200
c)
$1000
d)
$800
38.
What is the type of correlation?
a)
Negative 
b)
no association
c)
positive 
39.
Which scatter plot shows a linear relationship between x and y?
a)
Graph A
b)
Graph B
c)
Graph C
d)
Graph D
40.
What is a line of best fit used for?
a)
To make predictions
b)
To make the graph look pretty
c)
To connect the points
d)
To make it look like you know what you are doing
41.
What type of association does this graph show?
a)
Positive
b)
negative
c)
none
d)
all of the above
42.

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

a)

Yes

b)

No

43.

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

a)

Yes

b)

No

44.

What is the equation of the line of best fit

a)

y= -2x + 10

b)

y= 10x+ 2

c)

y=2x+10

d)

y= 10

45.

Which sentence describes the relationship shown on this scatter plot?

a)

As the temperature decreases, the visitors increase.

b)

As the temperature increases, the number of visitors increases.

c)

As the visitors increase, the temperature decreases.

d)

No correlation

46.

This measures how strong or weak the relationship between 2 quantitative variables are.

a)

Scatter Plot

b)

Causation

c)

Correlation

d)

Line of best fit

47.

What is the y-intercept?

a)

-2

b)

3

c)

2

d)

-3

48.
Select the statement that best describes the line.
a)
The line is the line of best fit.
b)
The line is NOT a line of best fit because it does not pass through two points.
c)
The line is NOT a line of best fit because it does not go through the middle of the data set.
d)
The line is NOT a line of best fit because it does not go through the origin.
49.
Which of the following lines represents the line of best fit for the scatter plot?
a)
A
b)
B
c)
C
d)
D
50.
The red line represents the line of best fit for the scatter plot. How many ice cream sales are expected if the temperature is 90°?
a)
55
b)
0
c)
103
d)
100
51.
What type of association does this graph have?
a)
positive 
b)
negative
c)
none
d)
all of the above
52.
What type of association does this graph show?
a)
Positive
b)
negative
c)
none
d)
all of the above
53.

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

a)

Yes

b)

No

54.

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

a)

Yes

b)

No

55.

What is the equation of the line of best fit?

a)

y= −12x + 6-\frac{1}{2}x\ +\ 6

b)

y= 12x +6\frac{1}{2}x\ +6

c)

y= 6x + 2

d)

y = -2x +6

56.

What is the equation of the line of best fit

a)

y= -2x + 10

b)

y= 10x+ 2

c)

y=2x+10

d)

y= 10

57.

Which line is the best line of best fit?

a)

a

b)

b

c)

c

d)

i don't see any lines

58.

What are the coordinates of the outlier?

a)

(1,9)

b)

(9,1)

c)

(2,2)

d)

y=x

59.

What is the equation of the line of best fit?

a)

y= 2x+3

b)

y=3x+2

c)

y= 12x +3\frac{1}{2}x\ +3

d)

y= −12x +3-\frac{1}{2}x\ +3

60.
Which of the following lines represents the line of best fit for the scatter plot?
a)
A
b)
B
c)
C
d)
D
61.
a)
positive trend
b)
negative trend
c)
no trend

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