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Quarter 1 2 3 4 2018 66 106 140 82 2019 73 119 165 91 2020 85 130 205 100 a)Use the technique of least
Quarter | 1 | 2 | 3 | 4 |
2018 | 66 | 106 | 140 | 82 |
2019 | 73 | 119 | 165 | 91 |
2020 | 85 | 130 | 205 | 100 |
a)Use the technique of least squares method, to find the trend line b)Find the trend values c)Forecast the sales for 2021 second quarter. d)Plot the time series data and trend line. e)Using the same data in the table estimate the season variation component (S).
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