Problem 11 of 7
Compute the residual for observed value 15 and predicted value 11.8.
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calculate observed minus predicted.
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Residual convention must be observed minus predicted.
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Solution
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1. Identify observed value and model-predicted value.
2. Subtract predicted from observed.
3. Keep the sign of the residual.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Predicted minus observed unless the prompt explicitly uses a different convention.