Question
1. Trend in an exponential trend model is also known as: a. Percentage seasonality b. Exponential Seasonality c. Exponential growth d. Percentage growth 2. An
1. Trend in an exponential trend model is also known as:
a. | Percentage seasonality | |
b. | Exponential Seasonality | |
c. | Exponential growth | |
d. | Percentage growth |
2. An analyst ran three models as following with the respective training and validation periods error values:
1. Linear Trend; Training Period RMSE = 1246.43, Validation Period RMSE = 2130.43
2. Exponential Trend + Seasonality: Training Period RMSE = 643.44, Validation Period RMSE = 690.88
3. Polynomial Trend + Seasonality: Training Period RMSE = 689.09, Validation Period RMSE = 603.78
Based on the above information, please select the right statement below:
a. | Exponential Trend + Seasonality model has learned the systematic components better than others | |
b. | Polynomial Trend + Seasonality model has learned the systematic components better than others
| |
c. | Linear model has learned the systematic components better than others
| |
d. | None of the above statements are correct. |
3. The following graph shows a time plot of the seasonally adjusted Revenue of airlines.
Which of the following methods would be adequate for forecasting this series?
1. Linear regression model with dummy variables | ||
2. Linear regression model with trend | ||
3. Linear regression model with dummy variables and trend | ||
4. None of the above |
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