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WorksheetsScatter Plots and Line of Fit
Total questions: 12
Worksheet time: 22mins
Name
Class
Date
1.
In a scatterplot, a cluster...
a)
...is something we didn't learn in 8th grade
b)
...is a point on the origin
c)
...is a point that is far outside the main cluster of points/ordered pairs
d)
...is a group of points that are close together
2.
In a scatterplot, an outlier...
a)
...is something we didn't learn in 8th grade
b)
...is a point on the origin
c)
...is a point that is far outside the main cluster of points/ordered pairs
d)
...is a group of points that are close together
3.
Which scatter plot shows a linear relationship between x and y?
a)
Graph A
b)
Graph B
c)
Graph C
d)
Graph D
4.
If a scatterplot has no association then...
a)
...it has no ordered pairs
b)
...it has ordered pairs that have a negative pattern
c)
...its ordered pairs have no predictable pattern
d)
...if it makes a lion on a graph (roar!)
5.
What type of association does this scatter plot represent?
a)
positive linear association
b)
negative association
c)
no association
d)
nonlinear association
6.
Is the point in red an outlier?
a)
Yes
b)
No
7.
This graph has...
a)
Clusters
b)
outliers
8.
Which graph represents data that has a correlation coefficient close to -1?
a)
b)
c)
d)
9.
Which correlation coefficient indicates a stronger relationship: − 0.98 or 0.91?
a)
-0.98
b)
0.91
10.
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
11.
The linear model to represent the distance (in miles) traveled given the time (in hours) driving is
m=−1.79+61.93h . Predict how far a person will travel driving 10 hours.a)
617.51 miles
b)
621.09 miles
c)
100 miles
d)
0.19 miles
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
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