The Difference Between an Unbalanced and a Balanced Panel Is

question 28

Multiple Choice

The difference between an unbalanced and a balanced panel is that

• A)you cannot have both fixed time effects and fixed entity effects regressions.
• B)an unbalanced panel contains missing observations for at least one time period or one entity.
• C)the impact of different regressors are roughly the same for balanced but not for unbalanced panels.
• D)in the former you may not include drivers who have been drinking in the fatality rate/beer tax study.

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Definitions:

First Class

The highest quality of service or seating available, typically offering more space, comfort, and amenities, often found in transportation and accommodations.

Second Class

A category of service or ticket in transportation or other services that is below the highest level in terms of amenities and cost.

Miles Traveled

The total distance covered or traveled, often used in contexts like transportation studies, expense calculations, or travel statistics.

Perfect Substitutes

are goods that can be completely exchanged for one another at a constant rate of substitution and possess identical levels of utility and functionality for consumers.