Why Is It Necessary to Study a Sample of Individuals

question 142

Multiple Choice

Why is it necessary to study a sample of individuals that is representative of a larger population?

• A) ​because a sample gives better statistical strength than a population, and this allows a research to "confirm" any hypothesis (s)he has made
• B) ​because there are ethical restrictions against gathering data from a population, but not a sample.
• C) ​because a population will include too many people who would be unwilling to answer questions honestly.
• D) ​because it would be impractical, perhaps even impossible, to attempt to gather data from an entire population of individuals.

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Definitions:

Decade

A span lasting a decade.

Roosevelt Administration

The period of U.S. governance under President Franklin D. Roosevelt from 1933 to 1945, known for the New Deal programs.

Federal Reserve Board

The governing body of the Federal Reserve System, overseeing the U.S. central banking system and responsible for regulating the nation's monetary policy.

Recession 1937-38

A sharp economic downturn that occurred during the late 1930s in the United States, part of the larger Great Depression era, marked by high unemployment and deflation.