The Variance Sum Law Deals with

question 37

Multiple Choice

The variance sum law deals with

• A) the variance of the sum of two or more variables.
• B) the variance of the difference of two or more variables.
• C) the variance of any single variable.
• D) both a) and b).

---

Definitions:

Individualistic Model

A concept in ecology that emphasizes the importance of individual variation in influencing community structure.

Interaction

A kind of action that occurs as two or more objects have an effect upon one another. The idea of a two-way effect is essential in the concept of interaction, as opposed to a one-way causal effect.

Organismic Model

A perspective in biology and ecology that views an organism as a single, integrated unit.

Frederick Clements

An early 20th-century ecologist known for his theory of plant succession and the concept of the climax community.