Concept explainers
a.
Identify the variable that has a stronger relationship with the value of land and give the reason.
a.
Answer to Problem 1SE
The number of acres of land has a stronger relationship with the value of the land.
Explanation of Solution
From the
On the other hand, in the scatterplot of (B), the points are widely scattered in the vertical direction.
Therefore, the number of acres of land has a strong relationship with the value of land.
b.
Explain a better prediction about the value of land by knowing the acreage or the number of rooms in the house.
b.
Answer to Problem 1SE
Yes, one can be able to make a better prediction about the value of land.
Explanation of Solution
- From the scatterplots of (A) and (B), one can observe that the value of land is more strongly associated with acreage than with the number of rooms.
- Thus, one can be able to make a better prediction about the value of land because there is less scatteredness in the vertical direction of acreage and the value of land.
- Therefore, yes, one can be able to make a better prediction about the value of land.
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Chapter 4 Solutions
Essential Statistics: Exploring The World Through Data, Kent State University
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