Question: Regression analysis was performed on a time series containing 4 years of quarterly sales. The sales data certains a seasonal effect, but newed. The following

Regression analysis was performed on a time series containing 4 years of quarterly sales. The sales data certains a seasonal effect, but newed. The following estimadesio was obtained 7-112.0-16.002+20.0093+10.04 The sales forecast for Quarte 1 and 2 of Year we O a 112.90 Ob 138, 122 O, 138 O d. 132. 116
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