Which of the Following Threats to Internal Validity Can Apply

question 33

Multiple Choice

Which of the following threats to internal validity can apply even when a control group is used?

• A)Attrition
• B)History threats
• C)Instrumentation threats
• D)Demand characteristics

---

Definitions:

Consumer Surplus

The distinction between the ideal payment by consumers for a product or service and the financial outlay they make.

Average Cost

An alternative term for average total cost; the total cost divided by the quantity of output produced.

Deadweight Loss

A reduction in economic effectiveness that happens when a product or service does not reach, or cannot reach, its equilibrium state.

Average Cost

The total cost of production divided by the number of units produced, indicating the cost per unit.