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WorksheetsScatter Plots and Lines of Best Fit
Total questions: 34
Worksheet time: 2hrs 20mins
Name
Class
Date
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.
a)
12 chapters
b)
15 chapters
c)
18 chapters
d)
21 chapters
2.
The number of siblings you have and your weight.
a)
Positive correlation
b)
Negative correlation
c)
No correlation
d)
All of the above
3.
What type of correlation (association)?
The outside temperature and the amount of layers you wear.
The outside temperature and the amount of layers you wear.
a)
Positive correlation
b)
Negative correlation
c)
No correlation
d)
All of the above
4.
Find the slope for the trend line using points (2,2) and (4,3)
a)
2
b)
1/2
c)
-2
d)
-1/2
5.
Which scatter plot shows a linear relationship between x and y?
a)
Graph A
b)
Graph B
c)
Graph C
d)
Graph D
6.
What is the correlation?
a)
Negative correlation
b)
No correlation
c)
Positive correlation
d)
All of the above
7.
As the age of the car increases, its value decreases. Which scatterplot represents this relationship?
a)
A
b)
B
c)
C
d)
D
8.
Which choice best defines the term "linear function"?
a)
An equation that is the bomb diggity
b)
An equation that can be written in slope-intercept form
c)
An equation with an exponent in it
d)
An equation that has a slope but not a y-intercept
9.
a)
440 turtles
b)
40 turtles
c)
150 turtles
d)
90 turtles
10.
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
11.
What is the type of association?
a)
Negative
b)
no association
c)
positive
12.
What would the correlation be between math grades and the time it takes to run a mile ?
a)
Postive Correlation
b)
Negative Correlation
c)
No Correlation
d)
Cannot Be Determined
13.
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
14.
In the equation y=3x-5, what is the value of the y-intercept?
a)
3
b)
-5
c)
-3/5
d)
-2
15.
The graph shows a line of best fit for data collected on the amount of income earned by lawn companies in relation to the number of yards mowed. What is the equation of the line of best fit?
a)
y = (3/2) x
b)
y = 30x
c)
y = 30x + 300
d)
y = (3/2)x + 300
16.
A teacher made the following graph showing absences vs. final grades. Predict the grade of a student that has 7 absences.
a)
45
b)
50
c)
60
d)
70
17.
A small theme park is trying to determine the number of guests they should expect on a weekend, based on the temperature outside. Based on the trend line, about how many guests should be expected if the temperature is around 80°?
a)
8,300
b)
8
c)
7,300
d)
9,300
18.
The graph above shows a line of best fit for data collected on the distance bicyclists have remaining in relation to the amount of time they have been riding. What is the equation of the line of best fit?
a)
y = -25x + 170
b)
y = 25x + 170
c)
y = -(5/8) x + 170
d)
y = (5/8) x + 170
19.
If m=3 and b=6, what is the correct slope intercept equation?
a)
y=3-6
b)
y=3x-6
c)
y=3x+6
d)
y=6x+3
20.
1. Mrs. Collins made a scatterplot to show the relationship between the number of absences and a student’s final exam score. Based on this scatterplot, a student with 6 absences should get approximately what score on the final exam?
a)
65
b)
92
c)
70
d)
76
21.
If a carpenter earned $1000, what is the best estimate for how many days he worked?
a)
3
b)
4
c)
5
d)
6
22.
What is a scatter plot?
a)
A graph that shows the relationship of two data sets.
b)
A graph drawn using rectangular bars to show how large each value is.
c)
A graph that shows information that is connected in some way.
d)
A graph that shows data changing over time.
23.
-7(w - 4) + 3w - 27
a)
4w + 15
b)
-4w + 1
24.
6(x + 1) - 5(x + 2)
a)
2x + 8
b)
x - 4
25.
3(3x - 6) = 18
a)
x = 4
b)
x = -4
c)
x = 0
d)
x = -12
26.
-3 ( f - 8 ) = 39
a)
x = -21
b)
x = -10.3
c)
x = -5
d)
x = 5
27.
3x + 2(4x - 4) = 3
a)
x = 4
b)
x = 3
c)
x = 2
d)
x = 1
28.
Which of the following is equivalent to
-8 + 9(5 + 2x)?
a)
-5 - 2x
b)
18x + 37
c)
-37 + 18x
d)
18x - 53
29.
15y2 . (2y)3
a)
120y5
b)
120y6
c)
30y5
d)
30y6
30.
9n4 . 6n7
a)
15n11
b)
54n28
c)
3n3
d)
54n11
31.
a)
y160
b)
y1
c)
1
d)
y4
32.
Solve for f:
f - 4 = 6f + 26
f - 4 = 6f + 26
a)
f = -5
b)
f = 5
c)
f = 6
d)
f = -6
33.
Solve for x:
4(1-x)+3x=-2(x+1)
4(1-x)+3x=-2(x+1)
a)
x = -6
b)
x = 6
c)
x = 3
34.
Solve:
5y+34 = -2(-7y+1)
5y+34 = -2(-7y+1)
a)
y = -4
b)
y = 9
c)
y = 4
d)
y = 36/19
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