SAT Math Multiple Choice Practice Question 13: Answer and Explanation

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Question: 13


If the data in the scatterplot above were approximated by a linear function, the line would come closest to which pair of points?

A. A and B
B. A and C
C. A and D
D. B and C
E. C and D

Correct Answer: B


B. This scatterplot shows a negative trend, so the line of best fit would go roughly from the top left to the bottom right. However, point D is significantly lower than the rest of the points. If you try drawing a line between A and D, or B and D, you see that it's not that close to a lot of the points. However, the line from A to C is a good approximation of the scatterplot as a whole, as you can see in this diagram:

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