Exploring Association Answers
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1
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Which scatterplot shows no correlation?
A
On a graph, points are grouped closely together and decrease.
B
On a graph, points are grouped closely together to form a curve.
C
On a graph, points are grouped closely together and decrease.
D
On a graph, points are scattered all over the graph.
2
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Which is the best representation of a nonlinear association?
A
On a graph, points are grouped together to form a curved line.
B
On a graph, points are grouped closely together and increase.
C
On a graph, points are grouped closely together and increase.
D
On a graph, points are grouped closely together and decrease.
3
What type of association and correlation are shown by the scatterplot?
A
linear association, positive correlationB
linear association, negative correlationC
nonlinear association, strong correlationD
nonlinear association, weak correlation4
Which scatterplot shows the weakest positive linear association?
A
On a graph, points are grouped closely together and increase.
B
On a graph, points are grouped closely together to form a line and increase.
C
On a graph, points are grouped closely together and decrease.
D
On a graph, points are grouped closely together to form a line and decrease.
5
Ashik claims that the graph on the right is the correct interpretation of the scatterplot, but his friend Shelby claims that the graph on the left is correct. Shelby’s Graph Ashik’s Graph Who is correct and why?
A
Shelby is correct because the line of best fit has a negative slope and the trend shows a decrease in y values as the x values increase.B
Shelby is correct because the line of best fit matches the points as closely as possible with a weak correlation.C
Ashik is correct because the points are a strong correlation to this nonlinear association.D
Ashik is correct because points with a weak correlation can never have linear association.6
A scatterplot has a positive, linear correlation. Which statement is true about the relationship between the x- and y-values?
A
As the x-values increase, the y-values tend to increase.B
As the x-values increase, the y-values tend to decrease.C
As the x-values decrease, the y-values tend to increase.D
As the x-values decrease, the y-values tend to vary randomly.Did you find these answers helpful?
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