What Is True About Reporting the Mean Difference Between Two

question 25

Multiple Choice

What is true about reporting the mean difference between two groups in a meta-analysis?

• A) It is a measure of differences between nominal data for the two groups.
• B) It is an estimate of the effect of differences between the two groups of subjects.
• C) It is not used to examine differences in ratio-level data.
• D) It is appropriate only when the same scale is used to measure outcomes.

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Definitions:

Independent Variable

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

Manipulate

To control or influence something or someone skillfully, often in an unfair manner.

Control Group

A group in an experiment that does not receive the treatment or intervention and is used as a benchmark to measure how the other tested subjects do.

Fake Cigarettes

Products designed to mimic the appearance and sometimes the sensation of smoking tobacco, often used as aids to quit smoking.