Dummy Variables Are Used in Time-Series Forecasting Models

question 56

Multiple Choice

Dummy variables are used in time-series forecasting models

• A)to change the intercept of a regression in selected periods.
• B)to account for random variation in the data.
• C)to account for seasonal variation in the data.
• D)both a and b
• E)both a and c

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Definitions:

Pleura

The thin, protective membranes surrounding the lungs and lining the inner chest wall, facilitating smooth movement of the lungs during breathing.

Pleurisy

An inflammation of the pleurae, which are the layers of tissue lining the lungs and inner chest wall, often causing sharp chest pain with breathing.

Pleural Cavity

The thin fluid-filled space between the two layers of the pleura surrounding the lungs, providing lubrication during respiratory movements.

Blood

A vital liquid flowing in the living organism's body that carries essential substances and removes waste.