- - - - -_the_relationship_between - - - - ~ The scatterplot shows two variables x and y. A line of best fit for the data is also shown. y,_ 10 V 9 / 8 / 7 v • 6 V 5 Y. 4 /. 3 •v 2 -v • 1 7 X l, 12345678910 For how many of the 10 data points is the actual y-value greater than the y-value predicted by the line of best fit?
Correct answer: C (parsed from the explanation — this source omits an answer key for this item)
Explanation
Choice C is correct. Any data point that’s located above the line of best fit has a y-value that’s greater than the y-value predicted by the line of best fit. For the scatterplot shown, 6 of the data points are above the line of best fit. Therefore, 6 of the data points have an actual y-value that’s greater than the y-value predicted by the line of best fit. Choice A is incorrect and may result from conceptual or calculation errors. Choice B is incorrect. This is the number of data points that have an actual y-value that’s less than the y-value predicted by the line of best fit. Choice D is incorrect and may result from conceptual or calculation errors. 44 SAT PRACTICE TEST #5 ANSWER EXPLANATIONS SAT ANSWER EXPLANATIONS n MATH: MODULE 2
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