You Just Read a Study Which Reports That Marijuana Use

question 14

Multiple Choice

You just read a study which reports that marijuana use leads to heroin addiction. After a careful examination of the literature, you are unable to find any other researcher who has been able to duplicate these results. You may conclude that this study lacks:

• A) reliability.
• B) representation.
• C) cohesiveness.
• D) validity.
• E) legality.

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Definitions:

Fixed Costs

Expenses that do not change in proportion to the activity of a business.

Contribution Margin

The amount by which sales revenue exceeds variable costs; it contributes towards covering fixed costs and generating profit.

Variable Costs

Charges that adjust in relation to the quantity of goods or services manufactured by a corporation.

Fixed Costs

Expenses that do not change in response to the level of goods or services produced by the business, such as rent, salaries, and insurance.