Two Groups of People Were Tested to Determine Whether Garlic

question 1

Multiple Choice

Two groups of people were tested to determine whether garlic lowers blood cholesterol levels.One group was given 800 mg of garlic powder daily for four months and exhibited an average 12% reduction in the blood cholesterol.The other group was not given any garlic and after four months averaged a 3% reduction in cholesterol.The group that was not given the garlic was the

• A)peer group.
• B)test group.
• C)treatment group.
• D)control group.
• E)double-blind group.

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Definitions:

One-Tailed Tests

Statistical tests that determine if there is a significant difference in a specific direction between two groups.

Nominal Scale

The simplest form of measurement in which data are categorized based on qualitative attributes or names without a numerical or ordered value.

Independent Variables

Variables that are manipulated or controlled in an experiment to test their effect on dependent variables.

Dependent Variables

A measure that is expected to vary in response to changes in an independent variable within an experiment.