Question: Table Q5 shows a quarterly time series data. Suppose that the data were used to forecast two steps ahead by using Holt's Trend Corrected

Table Q5 shows a quarterly time series data. Suppose that the data

Table Q5 shows a quarterly time series data. Suppose that the data were used to forecast two steps ahead by using Holt's Trend Corrected Exponential Smoothing method. Given the trend line equation for initial estimate is -117 2.65 and all the smoothing parameters has the value of 0.3. ( 1 2 Year 2018 2018 Quarter Q1 Q2 Sales 123.99 121.93 Table Q5: Quarterly Sales Data 4 5 6 7 2018 2018 2019 2019 2019 Q3 Q4 Q1 Q2 Q3 126.33 125.99 133.43 128.09 128.45 (a) Compute the fitted error. (b) Conclude whether the forecasting model is bias (c) Compute the two steps ahead forecast and their forecast errors. 8 2019 Q4 129.77

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