How Does Randomization Work to Control Extraneous Variables

question 48

Multiple Choice

How does randomization work to control extraneous variables?

• A) The researcher uses different treatment sequences in order to control order effects.
• B) The researcher ensures that all groups receive the extraneous variables to the same extent.
• C) The researcher creates a constant or uniform condition to control an extraneous variable.
• D) Because all participants have an equal likelihood of being in any group, any individual differences associated with the participants should be equally distributed across the groups.

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Definitions:

Law of Diminishing

A principle stating that as more units of a variable input are added to fixed inputs, the additional output from each new unit of input eventually decreases.

Implicit Costs

The opportunity costs associated with a company's own resources, not directly paid for with cash but are the result of using assets instead of investing them elsewhere.

Economic Profit

The difference between total revenue and the total costs, including both explicit and implicit costs, unlike accounting profit which only considers explicit costs.

Explicit Costs

Direct financial payments made to acquire resources or services for business operations.