When a Third Variable Is Included in an Analysis and That

question 64

Multiple Choice

When a third variable is included in an analysis and that third variable changes the relationship between the independent variable and the dependent variable in an important way,the third variable is called a(n) ____.

• A)spurious variable
• B)moderator variable
• C)contingency variable
• D)outlier variable

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Definitions:

Down Syndrome

A genetic disorder caused by the presence of all or part of a third copy of chromosome 21, characterized by developmental delays and physical features such as a flat facial profile.

Skin Pigmentation

The coloring of the skin caused by the presence of melanin, which can vary greatly among individuals and populations.

Phenotype

The observable physical or biochemical characteristics of an organism, as determined by both genetic makeup and environmental influences.

Height

A measurement of a person or object from base to top or head to foot in either a lying or standing position.