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A college student has just completed her junior year. The following table summarizes her grade-point average (GPA) for each of the past nine quarters Year
A college student has just completed her junior year. The following table summarizes her grade-point average (GPA) for each of the past nine quarters
Year | Semester | GPA |
Freshman | Fall | 2.4 |
| Winter | 2.9 |
| Spring | 3.1 |
Sophomore | Fall | 2.5 |
| Winter | 3.0 |
| Spring | 3.2 |
Junior | Fall | 2.6 |
| Winter | 3.1 |
| Spring | 3.5 |
a) Forecast the students GPA for all three semesters of her senior year by using ADM method.
b) Forecast the students GPA for all three semesters of her senior year by using MDM method.
c) Which method gives more reliable forecast? Why?
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