1. Gradual, long-term movement in time-series values is called: trend. cyclical. seasonal. random. All of the above.
2. Two different forecasting methods are applied to the same data set. If the Mean absolute deviation is higher for the second method and the Mean square error is higher for the first method, what does this indicate?
The error measure for the first method is easier to interpret.
Both methods produce unacceptably high error rates.
The first method is less accurate than the second method.
The second method produces more extreme errors than the first method.
None of the above