Problem-Solving and Data AnalysisMediumPrediction from a line of best fit
Problem-Solving and Data Analysis practice question
For a set of data, the line of best fit is y = 20x + 15. What y-value does the line predict when x = 4?
Answer: 95
20(4) + 15 = 95.
Common wrong answers
- If you answered 39
- 39 adds 20, 4, and 15.
- If you answered 80
- 80 forgets the 15.
- If you answered 140
- 140 multiplies 35 by 4.
More Problem-Solving and Data Analysis questions
- Medium
A car travels 150 miles in 2.5 hours. At this rate, how far will it travel in 4 hours? - Medium
The price of a stock rises from $40 to $50. What is the percent increase? - Medium
Based on the model, what score does the line predict for a student who studies 5 hours? - Medium
A population decreases from 250 to 200 over a year. What is the percent decrease? - Medium
If one person is chosen at random from those who prefer tea, what is the probability the person is under 30? - Medium
What is the difference between the mean and the median of this data set?
Not affiliated with the College Board. SAT is a trademark of the College Board.