Based only on the seasonal effects in the data, compute estimates of quarterly sales for year 6 . Round your answers to whole number. Quarter 1 forecast $ thousands Quarter 2 forecast $ thousands Quarter 3 forecast $3 thousands Quarter 4 forecast \$ any linear trend in the time series. Round your answers (in thousands of dollars) to whole number. Enter negative value as negative number. The regression equation is: Based upon the seasonal effects in the data and linear trend, compute estimates of quarterly sales for year 6 . Round your answers to whole number. Quarter 1 forecast $ thousands Quarter 2 forecast $ thousands Quarter 3 forecast $ thousands Quarter 4 forecast $ thousands