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Algebra IA - Trend Lines

Total questions: 17

Worksheet time: 31mins

Name
Class
Date
1.
What is the slope in the picture?
a)
Positive
b)
Negative
c)
Zero
d)
Undefined
2.
What is the slope in the picture?
a)
Positive
b)
Negative
c)
Zero
d)
Undefined
3.
What type of slope?
a)
negative
b)
positive
c)
zero slope
d)
downward slope
4.
What type of slope?
a)
undefined
b)
positive slope
c)
negative slope
d)
zero slope
5.
What type of slope?
a)
negative
b)
steep
c)
undefined
d)
zero slope
6.
About how many male math teachers were there in 2006?
a)
15
b)
30
c)
35
d)
45
7.
Which sentence describes the relationship shown on this scatterplot?
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
8.
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
9.
Based on the graph, if Joe earned $400, how many hours did he work?
a)
25 hours
b)
35 hours
c)
45 hours
d)
15 hours
10.
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? 
Hint: create the trend line first
a)
65
b)
92
c)
70
d)
76
11.
Which of the following lines represents the line of best fit for the scatter plot?
a)
A
b)
B
c)
C
d)
D
12.
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
13.

How would you transform this line to fit the points?

a)

Increase the Slope, Increase the Y-Intercept

b)

Increase the Slope, Decrease the Y-Intercept

c)

Decrease the Y-Intercept

d)

Increase the Y-Intercept

14.

How would you transform this line to fit the points?

a)

Decrease the Slope, Decrease the Y-Intercept

b)

Decrease the Slope, Increase the Y-Intercept

c)

Increase the Y-Intercept

d)

Decrease the Slope

15.
What is the type of correlation for the following scatter plot?
a)
Negative 
b)
None
c)
Positive 
16.
What type of correlation does this scatter plot have?
a)
positive 
b)
negative
c)
none
d)
all of the above
17.
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.