Two-Variable Data: Models and Scatterplots

SAT Math· difficulty 3/5

The line of best fit predicts y=50y = 50 when x=5x = 5. The actual observed value when x=5x = 5 is y=47y = 47. What is the residual?

  • A

    50

  • B

    47

  • C

    3

  • D

    -3

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Explanation

Residual = observed - predicted = 4750=347 - 50 = -3.

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