If the Trend Model Y_t = a + Bt

question 15

Multiple Choice

If the trend model y_t = a + bt + ct² is fitted to a time series, we would get:

• A)R² that could be lower than the linear model.
• B)R² that could be either higher or lower than the linear model.
• C)R² that is at least as high as the linear model.
• D)no R² for this type of model because it is nonlinear.

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