Free SAT Two-variable data: models and scatterplots practice questionsdigital SAT, 2026 format
Scatterplots and lines of best fit: what the slope means, predicted values, and the gap between a data point and the line.
Answer each question, then read why the right answer is right and why the tempting one is wrong.
Question 1
| x (years) | y (dollars) |
|---|---|
| 0 | 200.00 |
| 1 | 170.00 |
| 2 | 144.50 |
The table shows the value y, in dollars, of a collectible x years after purchase. Which of the following equations best models the relationship between x and y?
Question 2
The scatterplot shows the number of hours of practice per week, x, and the tournament score, y, of 10 chess players, along with a line of best fit. The line of best fit is y = 4.2x + 1,150. Which of the following is the best interpretation of the slope of this line?
Question 3
The scatterplot shows the elevation, x, in thousands of feet, and the temperature, y, in degrees Fahrenheit, at 10 locations, along with a line of best fit. For how many of the 10 locations is the actual temperature greater than the temperature predicted by the line of best fit?
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