Which of the Following Is True for Data Models

question 33

Multiple Choice

Which of the following is true for data models?

• A) An identifier's value is associated with every entity in the data model.
• B) An attribute is some thing that the users want to track.
• C) Entities have attributes that describe characteristics of the entity.
• D) The relationships between entities are known as attributes.

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Definitions:

Standard Deviation

Standard deviation is a measure of the dispersion or spread of a set of data points, often used in finance to gauge the volatility of an investment's return over time.

Variance

A statistical measure of the dispersion of returns for a given security or market index, indicating the degree of volatility.

Portfolio Diversification

The practice of investing across different financial assets to reduce risk by spreading exposure.

Systematic Risk

The risk inherent to the entire market or market segment, which cannot be reduced through diversification.