When a Set of Variables with Exact Collinearity Is Included

question 8

Multiple Choice

When a set of variables with exact collinearity is included in an econometric model coefficient estimates are

• A)undefined
• B)unbiased
• C)biased upward
• D)biased,but the direction is unclear

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Definitions:

Hypodermic Needles

Thin, hollow tubes used for injections or withdrawals of fluids from the body, often attached to syringes.

Kidney Dysfunctionality

Impaired kidney function or disease, affecting the kidneys' ability to filter blood, remove waste, and balance fluids.

Schizoid Personality Disorder

A personality disorder characterized by social withdrawal.

Avoidant Personality Disorder

A personality disorder in which the person is unwilling to enter into relationships without assurance of acceptance because of fears of rejection and criticism.