Using the Hat Matrix Elements Hi to Determine Influential Points

question 59

Multiple Choice

Using the hat matrix elements hi to determine influential points in a multiple regression model with k independent variable and n observations, X_i is an influential point if

• A) h_i < n(k +1)/2.
• B) h_i > n(k +1)/2.
• C) h_i < 2(k +1)/n.
• D) h_i > 2(k +1)/n.

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Definitions:

Actual Parameters

The actual values or expressions passed to a function during a function call.

Parameters

Variables listed as part of a function's declaration or definition, representing the inputs that the function accepts.

Formal Arguments

Parameters specified in the function definition, representing the values that will be passed to the function upon its call.

Parameters

Variables listed as part of a function's declaration/definition, representing values passed into the function.