Which of the Following Statements About Screening Tests Are Correct

question 8

Multiple Choice

Which of the following statements about screening tests are correct? (Select all that apply)

• A)The sensitivity of a test is the proportion of all persons who have the disease who test positive
• B)The predictive value of a negative test (or negative predictive value, NPV) is not affected by the sensitivity of the test
• C)The prevalence of the disease of interest does not affect the accuracy of a screening test
• D)The prevalence of the disease of interest does not affect the performance of a screening test
• E)The specificity of a test is the proportion of all those who do not have the disease who test positive
• F)Across‐sectionalsurveyisthebeststudydesigntoassesstestaccuracy

---

Definitions:

Semistrong-Form Market Efficiency

A form of market efficiency that posits all public information is already reflected in stock prices, alongside historical data.

Weak-Form Market Efficiency

A form of market efficiency where all past trading information is already reflected in stock prices, assuming that investors cannot earn excess returns by analyzing historical price trends.

Strong-Form Market Efficiency

Describes a market where all information, public and private, is reflected in stock prices, and nobody can achieve superior gains.

Market Value

The current quoted price at which an asset or a service can be bought or sold.