Of the Following Research Topics,which Is Most Likely to Be

question 4

Multiple Choice

Of the following research topics,which is most likely to be an observational study?

• A)The relationship between hours of exercise and sleep.
• B)The difference in minutes a day exercising between boys and girls.
• C)The types of exercise students engage in after school.
• D)Students' feelings about after-school track practice.

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Definitions:

External Benefits

Positive effects of a product or service that are enjoyed by people other than those who directly use or consume the product or service.

Private Benefits

The direct advantages or gains accruing to an individual or organization from their economic actions, excluding wider societal impacts.

Producer Surplus

The difference between the amount that producers are willing to accept for a good or service and the actual amount they receive in the market.

Externality

A cost or benefit from production or consumption that accrues to someone other than the immediate buyers and sellers of the product being produced or consumed (see negative externality and positive externality).