3 4 Consider the following calculated forecasts. Period 1 2 Forecast 68 72 86 7160 Actual 57 60 70 1570 The value of the sum of squares for forecast errors SSE and the mean absolute deviation are 1. 222 and 48 2.766 and 9.6 3. 552 and 9.6 4. 148 and 76 5. 48 and 9.6 10 STA1502/012/0/2021 QUESTION 21 Consider the following time series Period Time series 441 The five-moving average for the period 4 is: 36314052 1. 35.4 2. 38.8 3. 35.25 4. 34.0 5. 36.5 QUESTION 22 Two forecasting techniques were used to predict the values of a time series. These values are given in the table below. Period Actual Forecast Model 1 Forecast Model 2 19 21 22 2 3 29 26 4 32 31 28 38 35 30 Which one of the following statements is incorrect? 1. MAD for model 1 i 2 2. SSE for model 2 is 93 3. MAD for model 2 is 3.4 4. SSE for model 1 is 24 5. The most accurate to both model using SSE is model 2