Approximately What Percentage of the School-Age Population Is Thought to Have

question 21

Multiple Choice

Approximately what percentage of the school-age population is thought to have a language disorder?

• A)1%
• B)5%
• C)10%
• D)20%

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Definitions:

Control Group

In an experiment, a group of subjects that does not receive the treatment being tested and is used as a benchmark to measure how the other tested subjects do.

Dependent Variable

In scientific research, the variable that is tested and measured; it is 'dependent' on the independent variable.

Fat Layer

A layer in the body composed primarily of adipose tissue, which stores energy and insulates and cushions the body.

Polar Bear's Skin

The black skin of a polar bear, hidden beneath its transparent, hollow fur, which helps in absorbing sunlight to keep the bear warm in cold environments.