Determine whether a scatter plot of the data for the following situation might show a positive, negative, or no relationship. Explain your answer.size of household and amount of water bill
Answer
A
positive relationship; as the size of the household decreases, the amount of the water bill increases.
B
positive relationship; as the size of the household increases, the amount of the water bill also increases.
C
negative relationship; as the size of the household decreases, the amount of the water bill increases.
D
negative relationship; as the size of the household increases, the amount of the water bill also increases.
Explanation
A larger household will generally use more water, leading to a higher water bill. Since both household size and water bill tend to increase together, the scatter plot would show a positive relationship. Choice B describes this pattern.
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