The Variance of a Discrete Random Variable Is Always Greater

question 140

True/False

The variance of a discrete random variable is always greater than or equal to zero.

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Definitions:

Preparation

The act of making ready or being made ready for use or consideration, often involving planning or organization.

Verification

The process of establishing the truth, accuracy, or validity of something.

Incubation

A period of gestation or development, often in a supportive environment, for new ideas or projects.

PDCA Cycle

A method used in business for continuous improvement, consisting of four phases: Plan, Do, Check, Act.