In this chapter, we use 0–1 indicator or “dummy” variables to incorporate shocks, structural shifts or segment differences into models. In cross-sectional data, indicators allow us to compare response across groups or segments. In time-series data, indicators allow us to modify responses to account for external shocks or structural shifts. Indicators also offer one option to account for seasonality or cyclicality in time series.
KeywordsIndicator Variable Touch Screen Conjoint Analysis Commercial Vehicle Structural Shift
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