Page 180 - BA1 Integrated Workbook STUDENT 2018
P. 180

Chapter 11





                           Using the model





               4.1 Forecasting

                    Typically ignore cyclical and random elements


                    Additive:              Y = T + S

                    Multiplicative:        Y = T × S


               4.2 'De-seasonalising' data

                    Effectively the same as extracting the trend

                    Typically ignore cyclical and random elements

                    Additive:              T = Y – S


                    Multiplicative:        T = Y ÷ S











































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