Page 293 - F2 - MA Integrated Workbook STUDENT 2018-19
P. 293
Statistical techniques
Test your understanding 7
The forecast trend
Y = 500 + 15x
Y = 500 + 15 × 18
Y = 500 + 270
Y = 770
Apply the seasonal variation:
Forecast sales units = 770 × 1.1 = 847 units
Test your understanding 8
Month Cost $000 Calculation Index
May 138 100.0
June 149 149/138 × 100 108.0
July 158 158/138 × 100 114.5
August 130 130/138 × 100 94.2
September 136 136/138 × 100 98.6
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