Assumptions Are Sometimes Necessary Because

question 102

Multiple Choice

Assumptions are sometimes necessary because:

• A)controlled experiments need to reflect the way things actually happen in real life
• B)there are often many factors in an analysis and it helps to focus our thinking
• C)every model is different and that must be explained clearly
• D)short-term effects differ from long-term effects

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Definitions:

Holt-Winters Additive Model

A forecasting technique that extends exponential smoothing to capture seasonality and trend in time series data.

Seasonality

Periodic fluctuations in data or phenomena that occur regularly based on a season, quarter, month, etc.

Mean Absolute Deviation

The average of the absolute differences between each data point and the mean of the data set.

Root Mean Square Error

A measure of the differences between values predicted by a model and the values actually observed, expressed as the square root of the mean of these differences squared.