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Interpreting Model Prediction Error

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A function f models energy consumption in kilowatt-hours, where x is the outdoor temperature in degrees Celsius. The prediction error, calculated as actual value − predicted value, is negative for all temperatures x > 30°C. What does this indicate about the model’s predictions in this temperature range?

A

The model is more accurate at higher temperatures

B

It underestimates energy usage during extreme heat events

C

The error is mathematically impossible to interpret

D

It overestimates energy usage during extreme heat events

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