A Researcher Is Interested in Examining the Effect That Participation

question 56

Multiple Choice

A researcher is interested in examining the effect that participation in D.A.R.E. has on future drug use. In her experiment, she identifies one student who has completed the D.A.R.E. program and matches the student to another who is similar in most respects except he or she has not completed D.A.R.E. This is an example of ______.

• A) randomization
• B) random selection
• C) individual matching
• D) aggregate matching

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Definitions:

Null Hypothesis

A statistical hypothesis that assumes no significant difference or effect exists within a certain set of observations.

Significant Difference

A statistical measure indicating that the observed difference between two datasets is likely not due to random chance.

Confidence Interval

An assortment of values, coming from statistical review of samples, aiming to envelop the value of an unspecified population parameter.

Margin Of Error

An expression of the amount of random sampling error in a survey's results, which indicates the range within which the true value lies with a certain degree of confidence.