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Worksheet Mattel in Assignment 5.xlsx contains total quarterly revenues for Mattel, Inc. (the famous American toy manufacturer) between 2005 and 2012.
Worksheet "Mattel" in "Assignment 5.xlsx" contains total quarterly revenues for Mattel, Inc. (the famous American toy manufacturer) between 2005 and 2012.
- Develop a multiple regression model that combines seasonal effects and a trend component for these data. Carefully describe how you build this model and how you would interpret the slopes of the independent variables.
- Based on your model from part a), what revenues would you predict for the second and the fourth quarter of 2013, respectively?
Year | Month | Period | CPI-U |
2019 | Jan | 1 | 251.712 |
2019 | Feb | 2 | 252.776 |
2019 | Mar | 3 | 254.202 |
2019 | Apr | 4 | 255.548 |
2019 | May | 5 | 256.092 |
2019 | Jun | 6 | 256.143 |
2019 | Jul | 7 | 256.571 |
2019 | Aug | 8 | 256.558 |
2019 | Sep | 9 | 256.759 |
2019 | Oct | 10 | 257.346 |
2019 | Nov | 11 | 257.208 |
2019 | Dec | 12 | 256.974 |
2020 | Jan | 13 | 257.971 |
2020 | Feb | 14 | 258.678 |
2020 | Mar | 15 | 258.115 |
2020 | Apr | 16 | 256.389 |
2020 | May | 17 | 256.394 |
2020 | Jun | 18 | 257.797 |
2020 | Jul | 19 | 259.101 |
2020 | Aug | 20 | 259.918 |
2020 | Sep | 21 | 260.280 |
2020 | Oct | 22 | 260.388 |
2020 | Nov | 23 | 260.229 |
2020 | Dec | 24 | 260.474 |
2021 | Jan | 25 | 261.582 |
2021 | Feb | 26 | 263.014 |
2021 | Mar | 27 | 264.877 |
2021 | Apr | 28 | 267.054 |
2021 | May | 29 | 269.195 |
2021 | Jun | 30 | 271.696 |
2021 | Jul | 31 | 273.003 |
2021 | Aug | 32 | 273.567 |
2021 | Sep | 33 | 274.310 |
2021 | Oct | 34 | 276.589 |
2021 | Nov | 35 | 277.948 |
2021 | Dec | 36 | 278.802 |
2022 | Jan | 37 | 281.148 |
2022 | Feb | 38 | 283.716 |
2022 | Mar | 39 | 287.504 |
2022 | Apr | 40 | 289.109 |
2022 | May | 41 | 292.296 |
2022 | Jun | 42 | 296.311 |
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