In a Recent (2006)study of Adolescent Contraceptive Use,researchers Found That

question 42

Multiple Choice

In a recent (2006) study of adolescent contraceptive use,researchers found that in 1991,________ reported that they had used withdrawal or no method,whereas in 2003,________ reported that they had used either withdrawal or no method.

• A) 33%; 19%
• B) 19%; 33%
• C) 39%; 13%
• D) 13%; 19%

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Definitions:

Independent Variable

The variable in an experiment that is manipulated to observe its effect on the dependent variable.

Dependent Variable

The variable in an experiment that is affected by manipulation of the independent variable, and is measured or observed by the researcher.

Control Variable

An experimental element which is constant and unchanged throughout the course of the investigation to ensure that the effect of the independent variable can be measured accurately.

Control Group

In experimental research, a group of subjects that is not exposed to the experimental treatment, serving as a comparison point.