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Algebra I
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Error Analysis and Misconception Checks
Worksheet
Grade Level
Algebra I
ALG1.137 Error Analysis and Misconception Checks
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A model predicts a quiz score of 84, but the actual score is 79. A student says the model underpredicted by 5 because the residual is -5. What is the correction?
A
A residual of -5 means the model underpredicted by 5 because negative means too low.
B
A residual of actual - predicted = 79 - 84 = -5 means the model overpredicted by 5.
C
The residual should be 84 - 79 = 5, so the model underpredicted by 5.
D
The residual should be 79 + 84 = 163, so the model overpredicted by 163.
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