The Random Error in a Regression Equation

question 59

Multiple Choice

The random error in a regression equation

• A)is the predicted error.
• B)includes both positive and negative terms.
• C)will sum to a large positive number.
• D)is used to estimate the accuracy of the slope.
• E)is maximized in a least squares regression model.

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Definitions:

Analogous Trait

A trait shared by different species due to convergent evolution, not because of a shared ancestry, producing similar structures independently.

Monophyletic Group

A group of organisms that consists of all the descendants of a common ancestor, representing a single branch on the tree of life.

Ancestor

An organism from which others have descended.

Convergent Evolution

The process by which unrelated or distantly related organisms evolve similar body forms, coloration, organs, or adaptations, often due to similar environmental pressures.