Determine If the Following Scenario Is an Observational Study or a Controlled

question 5

Multiple Choice

Determine if the following scenario is an observational study or a controlled experiment. A doctor is interested in determining whether a certain medication reduces migraines. She reviews her patients' medical records and finds that a higher proportion of people who take the medication have fewer migraines than those who did not take the medication.

• A)Observational study
• B)Controlled experiment
• C)Neither

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Definitions:

Winter

The coldest season of the year, occurring between autumn and spring.

Disinflation

A slowdown in the rate of inflation, marked by a gradual decrease in the general price level of goods and services over time.

Purchasing Power

The ability of an individual, firm, or group to purchase goods and services with a given unit of currency.

Price Level

The average cost across all sectors of goods and services produced in the economy.