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An alternate model fnr lhis time series uses multiple regression 10 relied both trend and seasonality, Dunmy variables reect mequarlers, 09. the variable 111? Is equal in 1 if the observaon is from the am quaner, 0 i1 not. A portion Mine regression aulpul irorn Minilab is shown helm: The Isgragziun Bquatiun is (lament = 535 + 3.30 Time 57.9 017 + 0.5 027 + 29.4 03? Predictor Coaf s: Cuaf 1- 0| Constant. 534.82 12.64 42.32 0.000 Time 0.3700 0.4919 17.03 0.000 0].? 6'J.81 12.84 5.29 0.000 02: 0.51 12.15 0.04 0.969 03: 29.30 12.16 2.30 0.029 \f