Dr Johnson's Study on the Effectiveness of a New Medication

question 72

Multiple Choice

Dr. Johnson's study on the effectiveness of a new medication for anxiety demonstrated positive results. Before assuming the medication is effective, it would be best to _____

• A)replicate the study.
• B)start with a new hypothesis.
• C)wait until his study is published.
• D)try the medicine ourselves.

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Definitions:

Categorical Variable

A variable that can take on one of a limited, and usually fixed, number of possible values, assigning each individual or other entity to a particular group or nominal category.

Dummy Variables

Variables created to include categorical data in regression models, converting categories to a numerical form.

Confidence Intervals

Ranges within which a population parameter is estimated to lie with a certain level of confidence, often used to indicate the reliability of an estimate.

Regression Coefficients

Parameters in a regression model that quantify the relationship between the dependent variable and each of the independent variables.