Using the Hat Matrix Elements H_i to Determine Influential Points

question 8

Multiple Choice

Using the hat matrix elements h_i 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 > 2(k + 1)/n.
• C) h_i < n(k + 1)/2.
• D) h_i < 2(k + 1)/n.

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Definitions:

External Rewards

Benefits or incentives provided by an external source, such as money, praise, or awards, that motivate behavior.

Biological Drives

Innate impulses that direct or motivate behavior, such as hunger, thirst, and the drive for sex.

Mastery Goals

Objectives focused on developing competence or mastering a skill rather than on comparing oneself to others.

Performance Goals

Objectives set to enhance or achieve a specific standard of proficiency on a task, usually within a predetermined time frame.