Test your understanding 7 A company will forecast its quarterly sales units for a new product by using a formula to predict the base sales units and then adjusting the figure by a seasonal index. The formula is BU = 4,000 +80Q Where BU = Base sales units and Q is the quarterly period number Chag 12 The seasonal index values are: Quarter 1 Quarter 2 Quarter 3 105% 80% 95% 120% Quarter 4 Identify the forecast increase in sales units from Quarter 3 to Quarter 4: 25% 80 units 100 units 1,156 units D unntages of time series analysis