SAT question e17babed (Two-variable Data Models And Scatterplots)

Question

The scatterplot shows the relationship between two variables, $x$ and $y$ . A line of best fit for the data is also shown.

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?

College Board · Accepted Answer

The correct answer is C. 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.

CookSAT · Answer

Note: Subtract the 4 points below the line of best fit from all 10 data points.

Explanation

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Why the other choices are wrong

SAT Question e17babed: Two-variable Data Models And Scatterplots answer and explanation with Desmos solution

Explanation

Enter in Desmos:

Why the other choices are wrong