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Newark College would like to include seasonality in its GPA forecasting model. The average GPA of the study body for each year was broken down
Newark College would like to include seasonality in its GPA forecasting model. The average GPA of the study body for each year was broken down into the average GPA by semester (Fall, Spring, Summer)
GPA | Semester | Year |
2.74 | Fall | 2006 |
2.94 | Spring | 2006 |
3.20 | Summer | 2006 |
2.65 | Fall | 2007 |
2.69 | Spring | 2007 |
3.11 | Summer | 2007 |
2.61 | Fall | 2008 |
2.98 | Spring | 2008 |
3.05 | Summer | 2008 |
2.87 | Fall | 2009 |
2.83 | Spring | 2009 |
3.26 | Summer | 2009 |
2.60 | Fall | 2010 |
2.85 | Spring | 2010 |
3.01 | Summer | 2010 |
2.92 | Fall | 2011 |
2.89 | Spring | 2011 |
3.33 | Summer | 2011 |
2.83 | Fall | 2012 |
3.15 | Spring | 2012 |
3.12 | Summer | 2012 |
2.78 | Fall | 2013 |
3.06 | Spring | 2013 |
3.37 | Summer | 2013 |
Part A:Using multiplicative decomposition, forecast the average GPA for the student body for each semester during 2014
Part C:Calculate the MAD for this forecast
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