Using the Cook's Distance Statistic Dᵢ to Determine Influential Points

question 289

Multiple Choice

Using the Cook's distance statistic Dᵢ to determine influential points in a multiple regression model with k independent variable and n observations and letting Fᵥ₁ᵥ₂ denote the critical value of an F distribution with v₁ and v₂ degrees of freedom at a 0.50 level of significance, Xᵢ is an influential point if

• A) Dᵢ < Fk₊₁,n₋k₋₁.
• B) Dᵢ > Fk₊₁,n₋k₋₁.
• C) Dᵢ < Fn₋k₋₁, k₊₁.
• D) Dᵢ > Fn₋k₋₁, k₊₁.

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Definitions:

Inferior

Anatomical term meaning below or closer to the feet; also called caudal.

Chemical Reactions

Processes that involve the rearrangement of molecular or ionic structure of substances, resulting in the formation of one or more new products.

Matter

Anything that occupies space and has mass, composed of atoms and molecules and existing in solid, liquid, gas, or plasma states.

Cell Nucleus

The organelle in a cell that contains most of the cell's genetic material, responsible for regulating cell activities.