The number of properties newly listed with a real estate agency in each qu over the last four years is given below. Assume the time series has seaso without trend. Quarter 1 2 3 4 Year 1 73 89 123 92 Year 2 81 87 115 95 Year 3 76 91 108 87 Year 4 77 88 120 97 a. Develop the optimization model that finds the estimated regression equa that minimize the sum of squared error.

Q: (-14) + (–7)

A:

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A: