Concept explainers
To find: the data showing the strong
Answer to Problem 71E
Graph (b)
Explanation of Solution
Given information:
The four
Calculation:
Since the points in graph (a) and (c) are falling down on moving from left to right. Thus scatter plot (a) and (c) shows
Since the points in graph (b) and (d) are rising on moving from left to right. Thus scatter plot (b) and (d) shows positive correlation. This shows that the values of one variable are increasing with respect to another.
The graph (b) has less scattered points and forms almost perfect straight line as compared to graph (d). Thus graph (b) represents the strong positive correlation.
Chapter 6 Solutions
Advanced Mathematical Concepts: Precalculus with Applications, Student Edition
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