A Threat to Internal Validity Occurs Only If a Potential

question 21

Multiple Choice

A threat to internal validity occurs only if a potential design confound varies with the independent variable.

• A)haphazardly
• B)systematically
• C)spontaneously
• D)especially

---

Definitions:

Producer Surplus

The gap between the price sellers are ready to accept for a good and the actual price obtained.

Deadweight Loss

The loss of economic efficiency that occurs when the equilibrium for a good or a service is not achieved, leading to an underproduction or overproduction of that good or service.

Deadweight Loss

A loss of economic efficiency that occurs when the equilibrium outcome is not achieved or when the market does not allocate resources at the optimal point.

Tax Revenue

The profit derived by governments from tax collection.