Concept explainers
To state if the statement is true or false
Answer to Problem 24E
True
Explanation of Solution
Given information:
A statement saying “Data that are
Correlation may be of many types depending on the nature. Here, there are two types of correlation positive and negative.
Positive correlation is when two variables move in the same direction either both upward or both downward whereas
So, in case of linear equation, the curve of the graph is a straight line either it is increasing or decreasing which indicates positive correlation.
On the other hand, in case of a quadratic equation, the curve of the graph is a parabola which is a ‘U’ shaped curve where the point increase and then decrease and then again increases. This shows a kind of negative correlation since the curve is not stable in increasing or decreasing.
So, the data that are positively correlated are always better modeled by linear equation than a quadratic equation.
Chapter 2 Solutions
Precalculus with Limits: A Graphing Approach
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