
Concept explainers
(a)
discuss the data in each
(a)

Answer to Problem 80E
The scatter plot follows the linear model well.
Explanation of Solution
Given information:
The given graph is shown in figure (1).
Figure (1)
Calculation:
In the given graph, the value of
From the graph, the data follows a linear model well. Hence, there is
Therefore, the scatter plot follows the linear model well.
(b)
discuss the data in each scatter plot can be approximated by linear model.
(b)

Answer to Problem 80E
The scatter plot represents a parabola shape, So, there is no co-relation.
Explanation of Solution
Given information:
The given graph is shown in figure (2).
Figure (2)
Calculation:
In the given graph, the data represents a parabola shape.
From the graph, the data doesn’t shows any co-relation.
Therefore, the scatter plot represents a parabola shape, So, there is no co-relation.
(c)
discuss the data in each scatter plot can be approximated by linear model.
(c)

Answer to Problem 80E
The scatter plot follows the linear model with moderate co-relation.
Explanation of Solution
Given information:
The given graph is shown in figure (3).
Figure (3)
Calculation:
In the given graph, the value of
From the graph, the data follows a linear model but at some points there is derivation from linear model, hence there is moderate co-relation.
Therefore, the scatter plot follows the linear model with moderate co-relation.
(d)
discuss the data in each scatter plot can be approximated by linear model.
(d)

Answer to Problem 80E
The scatter plot follows the linear model with high co-relation.
Explanation of Solution
Given information:
The given graph is shown in figure (3).
Figure (3)
Calculation:
In the given graph, the value of
From the graph, the data follows a linear model well, hence there is high co-relation.
Therefore, the scatter plot follows the linear model with high co-relation.
Chapter 1 Solutions
EBK PRECALCULUS W/LIMITS
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