If Variance of an Independent Variable in a Regression Model

question 22

True/False

If variance of an independent variable in a regression model, say x₁, is greater than 0, or Var(x₁) > 0, the inconsistency in ₁ (estimator associated with x₁) is negative, if x₁ and the error term are positively related.

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Definitions:

Cilia

Hair-like projections from the outside of the cell membrane on some cell types.

Pharynx

The membrane-lined cavity behind the nose and mouth, connecting them to the esophagus, part of the digestive and respiratory systems.

Respiratory Rate

The number of breaths taken per minute, an important vital sign indicating the efficiency of the respiratory system.

Carbon Dioxide

A colorless, odorless gas produced by burning carbon and organic compounds and by respiration, and absorbed by plants in photosynthesis.