Why Is It Optimal for a Researcher to Ensure That

question 137

Multiple Choice

Why is it optimal for a researcher to ensure that only one variable changes throughout an experiment?

• A) Because more than one variable creates a statistical nightmare that is exceedingly difficult to interpret.
• B) Because multiple variables will require more research participants, and thus more funding.
• C) Because more than one variable changing can influence our results and lead to incorrect conclusions.
• D) Because the definition of a true experiment is that only one variable should change at a time; otherwise, it is not an experiment.

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Definitions:

Break-Even Point

The sales level at which the company does not make a profit or incur a loss, denoting a balance between revenue and costs.

Variable Manufacturing Costs

These costs vary directly with the level of production output and include expenses such as raw materials, direct labor, and certain overheads.

Fixed Manufacturing

Costs that do not vary with the level of production or sales, associated with the operation of a production facility.

Break-Even Level of Sales

The sales amount at which a company's total revenues equal its total expenses, resulting in no net profit or loss.