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Question the-st

3.4 Two-Variable Data & Models - Residuals
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  • The sterplot has 11 data points.
  • The data points are in a linear pattern trending up from left to right.
  • A line of best fit is shown:
    • The line of best fit slants up from left to right.
    • 5 points are above the line of best fit.
    • 6 points are below the line of best fit.
    • The line of best fit passes through the following approximate coordinates:
      • (2 comma 2.9)
      • (8 comma 7.7)

The sterplot shows the relationship between two variables, x and y . A line of best fit is also shown. For how many of the 11 data points does the line of best fit predict a greater y -value than the actual y -value?

Enter your answer:

The sterplot has 11 data points. The data points are in a linear pattern trending up

Hard-difficulty · SAT Math · Two-Variable Data & Models — Residuals. Read the question above, select your answer, and check the full explanation below to understand exactly why the correct choice works.

Answer explanation

The correct answer is 6 . The line of best fit predicts a greater y-value than the actual y-value for any data point that's loed below the line of best fit. For the sterplot shown, 6 of the data points are below the line of best fit. Therefore, the line of best fit predicts a greater y-value than the actual y-value for 6 of the data points.

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