Ononot — A pediatrician models child growth using OLS regression: Hei

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Linear Modelingmedium

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A pediatrician models child growth using OLS regression: $Height = 78.0 + 6.2 \times Age$ (in cm, for age $x$ in years, valid for ages 2 to 10). Why is predicting the height of a 25-year-old adult using this model highly inappropriate?