Two Variables Are Positively Correlated If

question 13

Multiple Choice

Two variables are positively correlated if:

• A) they move in the same direction.
• B) they move in the opposite direction.
• C) their movements tend to be unrelated.
• D) one is simply a multiple of the other.

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Definitions:

Germ Layer

Each of the three layers of cells (ectoderm, mesoderm, and endoderm) that form during embryogenesis, which give rise to all tissues and organs of an organism.

Radial Cleavage

A type of embryonic development in which the cells divide parallel or perpendicular to the polar axis, resulting in a radially symmetrical embryo.

Echinoderms

A phylum of marine animals characterized by radial symmetry and a unique water vascular system, including starfish and sea urchins.

Amphibians

Cold-blooded vertebrates that can live both in water and on land, such as frogs, toads, salamanders, and newts.