Concept explainers
To graph: Showing
Answer to Problem 27PFA
Graph c shows a negative
Explanation of Solution
Given Information: Four different graphs are provided.
Calculation:
In graphs a and d, as the value of x- increases, the value of y also increases. This shows that there is a
In graph d no such correlation can be determined as two persons of different age read same number of books per month.
In graph c , as the temperature increases the sales of hot cocoa sales decreases. This shows that there is a negative correlation and causation between the two variables.
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