Why Is Randomization Used to Assign Research Participants to Groups

question 40

Multiple Choice

Why is randomization used to assign research participants to groups?

• A)to prevent assembling groups that differ in a way that may influence the research outcome
• B)to make sure that all participants in the study are the same on the dependent variable when the study is concluded
• C)to make sure that all participants are the same on the independent variable before the study begins
• D)to prevent any differences in the way the independent variable is manipulated for all research subjects

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Definitions:

Simplify

The process of making an expression easier to understand or work with by combining like terms, reducing fractions, etc.

Rational Model

A mathematical model that uses rational expressions to describe relationships between different quantities.

Least Common Denominator

The smallest positive integer that is divisible by each denominator of a set of fractions, facilitating their comparison or summation.

Common Denominator

The shared multiple of the denominators of two or more fractions, used to make their denominators the same for addition or subtraction.