Question: Regression analysis was performed on a time series containing 4 years of quarterly sales.The sales data contains a seasonal effect, but no trend. The following

Regression analysis was performed on a time series containing 4 years of quarterly sales.The sales data contains a seasonal effect, but no trend. The following estimated regression equation was obtained.

Y= 112.0-16.0 Qty2 +26.0 Qtr3 +10.0 Qtr4

The sales forecasts for Quarters 2 and 3 of Year 6 are

a.80, 164

b.138, 122

c.96, 138

d.132, 116

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