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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A barrier method of contraception, consisting of a dome-shaped cup made of silicone or latex that fits inside the vagina to cover the cervix and prevent sperm from entering.

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