Which of the Following Statements About Time Series Trends IS

question 10

Multiple Choice

Which of the following statements about time series trends IS true?

• A) A time series can always be expressed as a straight line
• B) A time series comprises, trend, seasonal and residual components
• C) The trend component of a time series may fluctuate in a cyclical fashion
• D) A trend should always show an increase over time

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Definitions:

Liver

A vital organ located in the upper right portion of the abdomen, involved in many critical functions including detoxification, protein synthesis, and production of biochemicals necessary for digestion.

Pneumocystis Carinii

A type of fungus that can cause pneumonia in individuals with weakened immune systems, known as Pneumocystis pneumonia.

Malaise

A general feeling of discomfort, illness, or uneasiness whose exact cause is difficult to identify, often signaling the onset of an infection or other disease.

AIDS

Acquired Immunodeficiency Syndrome, a chronic, potentially life-threatening condition caused by the human immunodeficiency virus (HIV).