問題文
An author has a past series with more than a hundred observations behind it and no pattern that repeats across the calendar. Which forecast model type does the documentation match to it, and on which stated criterion?
選択肢
- The type built for long spans, which the documentation ties to irregular events that were known beforehand and to large outliers.
- The autoregressive integrated moving average, which the documentation ties to a count of at least fifty observations and preferably more than a hundred.
- The seasonal variant of it, which the documentation ties to values that run high in the summer months and low in the winter months.
- The triple smoothing type, which the documentation ties to an exponential moving average over data that repeats itself in intervals over time.