SAT Two-variable data: models and scatterplots Practice Question 10 (Medium)

Question bank / Two-variable data: models and scatterplots

Math · Problem-Solving and Data AnalysisMedium

A scatterplot shows $12$ data points and the line of best fit $y = 1.2x + 5$ . One of the data points is $(10, 20)$ . What is the difference between the actual $y$ -value of this point and the $y$ -value predicted by the line of best fit (actual minus predicted)?

$-3$

$3$

$17$

$20$

Show answer and explanation

Answer: B

The predicted value at $x = 10$ is $1.2(10) + 5 = 17$ . The actual value is $20$ , so actual minus predicted is $20 - 17 = 3$ . The point lies $3$ units above the line.

Choice A subtracts in the wrong order (predicted minus actual).

Ask Owl about this question Next question

Got it wrong? On SAT Owl, Owl looks at the answer you chose and explains the exact mistake, then gives you similar questions until it sticks. Get your predicted SAT score free.