In Bivariate Regression,which Statement Is True Concerning the Coefficient of Determination,r²

question 57

Multiple Choice

In bivariate regression,which statement is true concerning the coefficient of determination,r²?

• A) r² is the square of the simple correlation coefficient obtained by correlating the two variables
• B) r² varies between 0 and 1
• C) r² signifies the proportion of the total variation in Y accounted for by the variation in X
• D) all of the above
• E) none of the above

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Definitions:

Organismic Model

Cooperative view of community, described by Clements, in which a community goes through certain stages of development (succession), like the embryonic stages of an organism, and eventually reaches an adult state (climax community).

Individualistic Model

Independent view of community, described by Gleason, in which biological interactions are less important in the production of communities than are environmental gradients (such as climate and soil) or even chance. Compare with organismic model.

Interdependent

A relationship in which two or more entities rely on each other for survival or for the completion of processes.

Organismic Model

A conceptual model in biology that sees a community or ecosystem as a single living organism, emphasizing interactions and integration.